summaryrefslogtreecommitdiffstats
path: root/Lib/platform.py
diff options
context:
space:
mode:
Diffstat (limited to 'Lib/platform.py')
0 files changed, 0 insertions, 0 deletions
generated by cgit v0.12 at 2025-12-21 06:46:10 (GMT)
4 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534 6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465 7466 7467 7468 7469 7470 7471 7472 7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603 7604 7605 7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771 7772 7773 7774 7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793 7794 7795 7796 7797 7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843 7844 7845 7846 7847 7848 7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908 7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968 7969 7970 7971 7972 7973 7974 7975 7976 7977 7978 7979 7980 7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089 8090 8091 8092 8093 8094 8095 8096 8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114 8115 8116 8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216 8217 8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234 8235 8236 8237 8238 8239 8240 8241 8242 8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257 8258 8259 8260 8261 8262 8263 8264 8265 8266 8267 8268 8269 8270 8271 8272 8273 8274 8275 8276 8277 8278 8279 8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290 8291 8292 8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307 8308 8309 8310 8311 8312 8313 8314 8315 8316 8317 8318 8319 8320 8321 8322 8323 8324 8325 8326 8327 8328 8329 8330 8331 8332 8333 8334 8335 8336 8337 8338 8339 8340 8341 8342 8343 8344 8345 8346 8347 8348 8349 8350 8351 8352 8353 8354 8355 8356 8357 8358 8359 8360 8361 8362 8363 8364 8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 8397 8398 8399 8400 8401 8402 8403 8404 8405 8406 8407 8408 8409 8410 8411 8412 8413 8414 8415 8416 8417 8418 8419 8420 8421 8422 8423 8424 8425 8426 8427 8428 8429 8430 8431 8432 8433 8434 8435 8436 8437 8438 8439 8440 8441 8442 8443 8444 8445 8446 8447 8448 8449 8450 8451 8452 8453 8454 8455 8456 8457 8458 8459 8460 8461 8462 8463 8464 8465 8466 8467 8468 8469 8470 8471 8472 8473 8474 8475 8476 8477 8478 8479 8480 8481 8482 8483 8484 8485 8486 8487 8488 8489 8490 8491 8492 8493 8494 8495 8496 8497 8498 8499 8500 8501 8502 8503 8504 8505 8506 8507 8508 8509 8510 8511 8512 8513 8514 8515 8516 8517 8518 8519 8520 8521 8522 8523 8524 8525 8526 8527 8528 8529 8530 8531 8532 8533 8534 8535 8536 8537 8538 8539 8540 8541 8542 8543 8544 8545 8546 8547 8548 8549 8550 8551 8552 8553 8554 8555 8556 8557 8558 8559 8560 8561 8562 8563 8564 8565 8566 8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577 8578 8579 8580 8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620 8621 8622 8623 8624 8625 8626 8627 8628 8629 8630 8631 8632 8633 8634 8635 8636 8637 8638 8639 8640 8641 8642 8643 8644 8645 8646 8647 8648 8649 8650 8651 8652 8653 8654 8655 8656 8657 8658 8659 8660 8661 8662 8663 8664 8665 8666 8667 8668 8669 8670 8671 8672 8673 8674 8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685 8686 8687 8688 8689 8690 8691 8692 8693 8694 8695 8696 8697 8698 8699 8700 8701 8702 8703 8704 8705 8706 8707 8708 8709 8710 8711 8712 8713 8714 8715 8716 8717 8718 8719 8720 8721 8722 8723 8724 8725 8726 8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740 8741 8742 8743 8744 8745 8746 8747 8748 8749 8750 8751 8752 8753 8754 8755 8756 8757 8758 8759 8760 8761 8762 8763 8764 8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 8780 8781 8782 8783 8784 8785 8786 8787 8788 8789 8790 8791 8792 8793 8794 8795 8796 8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 8807 8808 8809 8810 8811 8812 8813 8814 8815 8816 8817 8818 8819 8820 8821 8822 8823 8824 8825 8826 8827 8828 8829 8830 8831 8832 8833 8834 8835 8836 8837 8838 8839 8840 8841 8842 8843 8844 8845 8846 8847 8848 8849 8850 8851 8852 8853 8854 8855 8856 8857 8858 8859 8860 8861 8862 8863 8864 8865 8866 8867 8868 8869 8870 8871 8872 8873 8874 8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937 8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954 
+++++++++++
Python News
+++++++++++

What's New in Python 3.3.0 Beta 2?
==================================

*Release date: xx-xxx-2012*

Core and Builtins
-----------------

- Issue #15020: The program name used to search for Python's path is now
  "python3" under Unix, not "python".

- Issue #15033: Fix the exit status bug when modules invoked using -m swith,
  return the proper failure return value (1). Patch contributed by Jeff Knupp.

- Issue #15229: An OSError subclass whose __init__ doesn't call back
  OSError.__init__ could produce incomplete instances, leading to crashes
  when calling str() on them.

Library
-------

- Issue #14826: Quote urls in urllib.request.Request similar to how they
  are quoted by urllib.request.URLopener. Allows urls to spaces in them to work
  transparently with urllib.request.urlopen(...). Patch contributed by Stephen
  Thorne.

- Issue #5931: wsgiref environ variable SERVER_SOFTWARE will specify an
  implementation specific term like Cpython, Jython instead of generic "Python"

- Issue #13248: Remove obsolete argument "max_buffer_size" of BufferedWriter
  and BufferedRWPair, from the io module.

- Issue #13248: Remove obsolete argument "version" of argparse.ArgumentParser.

- Issue #14814: implement more consistent ordering and sorting behaviour
  for ipaddress objects

- Issue #14814: ipaddress network objects correctly return NotImplemented
  when compared to arbitrary objects instead of raising TypeError

- Issue #14990: Correctly fail with SyntaxError on invalid encoding
  declaration.

- Issue #14814: ipaddress now provides more informative error messages when
  constructing instances directly (changes permitted during beta due to
  provisional API status)

- Issue #15247: FileIO now raises an error when given a file descriptor
  pointing to a directory.

- Issue #15261: Stop os.stat(fd) crashing on Windows when fd not open.

- Issue #15166: Implement imp.get_tag() using sys.implementation.cache_tag.

- Issue #15210: Catch KeyError when imprortlib.__init__ can't find
  _frozen_importlib in sys.modules, not ImportError.

- Issue #15030: importlib.abc.PyPycLoader now supports the new source size
  header field in .pyc files.

- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox
  files on flush().

- Issue #10571: Fix the "--sign" option of distutils' upload command.
  Patch by Jakub Wilk.

- Issue #9559: If messages were only added, a new file is no longer
  created and renamed over the old file when flush() is called on an
  mbox, MMDF or Babyl mailbox.

- Issue 10924: Fixed mksalt() to use a RNG that is suitable for cryptographic
  purpose.

Extension Modules
-----------------

- Issue #15194: Update libffi to the 3.0.11 release.

Tools/Demos
-----------

- Issue #12605: The gdb hooks for debugging CPython (within Tools/gdb) have
  been enhanced to show information on more C frames relevant to CPython within
  the "py-bt" and "py-bt-full" commands:
    * C frames that are waiting on the GIL
    * C frames that are garbage-collecting
    * C frames that are due to the invocation of a PyCFunction

Tests
-----

- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not
  enabled. Patch by Brian Brazil.

- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled.
  Patch by Brian Brazil.

Build
-----

- Issue #14330: For cross builds, don't use host python, use host search paths
  for host compiler.

- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module.

- Issue #15268: Search curses.h in /usr/include/ncursesw.


What's New in Python 3.3.0 Beta 1?
==================================

*Release date: 27-Jun-2012*

Core and Builtins
-----------------

- Fix a (most likely) very rare memory leak when calling main() and not being
  able to decode a command-line argument.

- Issue #14815: Use Py_ssize_t instead of long for the object hash, to
  preserve all 64 bits of hash on Win64.

- Issue #12268: File readline, readlines and read() or readall() methods
  no longer lose data when an underlying read system call is interrupted.
  IOError is no longer raised due to a read system call returning EINTR
  from within these methods.

- Issue #11626: Add _SizeT functions to stable ABI.

- Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber.

- Issue #15142: Fix reference leak when deallocating instances of types
  created using PyType_FromSpec().

- Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version
  guard for Py_LIMITED_API additions. Patch by Robin Schreiber.

- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on
  the work by Hirokazu Yamamoto.

- Issue #15096: Removed support for ur'' as the raw notation isn't
  compatible with Python 2.x's raw unicode strings.

- Issue #13783: Generator objects now use the identifier APIs internally

- Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels.
  Patch by Serhiy Storchaka.

- Issue #15026: utf-16 encoding is now significantly faster (up to 10x).
  Patch by Serhiy Storchaka.

- Issue #11022: open() and io.TextIOWrapper are now calling
  locale.getpreferredencoding(False) instead of locale.getpreferredencoding()
  in text mode if the encoding is not specified. Don't change temporary the
  locale encoding using locale.setlocale(), use the current locale encoding
  instead of the user preferred encoding.

- Issue #14673: Add Eric Snow's sys.implementation implementation.

- Issue #15038: Optimize python Locks on Windows.

Library
-------

- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving
  behind.

- Issue #15177: Added dir_fd parameter to os.fwalk().

- Issue #15176: Clarified behavior, documentation, and implementation
  of os.listdir().

- Issue #15061: Re-implemented hmac.compare_digest() in C to prevent further
  timing analysis and to support all buffer protocol aware objects as well as
  ASCII only str instances safely.

- Issue #15164: Change return value of platform.uname() from a
  plain tuple to a collections.namedtuple.

- Support Mageia Linux in the platform module.

- Issue #11678: Support Arch linux in the platform module.

- Issue #15118: Change return value of os.uname() and os.times() from
  plain tuples to immutable iterable objects with named attributes
  (structseq objects).

- Speed up _decimal by another 10-15% by caching the thread local context
  that was last accessed. In the pi benchmark (64-bit platform, prec=9),
  _decimal is now only 1.5x slower than float.

- Remove the packaging module, which is not ready for prime time.

- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir"
  parameter from os.remove / os.unlink.

- Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks.
  It is used automatically on platforms supporting the necessary os.openat()
  and os.unlinkat() functions. Main code by Martin von Löwis.

- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary.

- Issue #11113: add a new "html5" dictionary containing the named character
  references defined by the HTML5 standard and the equivalent Unicode
  character(s) to the html.entities module.

- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception
  are deprecated now that the parser is able to parse invalid markup.

- Issue #3665: \u and \U escapes are now supported in unicode regular
  expressions.  Patch by Serhiy Storchaka.

- Issue #15153: Added inspect.getgeneratorlocals to simplify white box
  testing of generator state updates

- Issue #13062: Added inspect.getclosurevars to simplify testing stateful
  closures

- Issue #11024: Fixes and additional tests for Time2Internaldate.

- Issue #14626: Large refactoring of functions / parameters in the os module.
  Many functions now support "dir_fd" and "follow_symlinks" parameters;
  some also support accepting an open file descriptor in place of of a path
  string.  Added os.support_* collections as LBYL helpers.  Removed many
  functions only previously seen in 3.3 alpha releases (often starting with
  "f" or "l", or ending with "at").  Originally suggested by Serhiy Storchaka;
  implemented by Larry Hastings.

- Issue #15008: Implement PEP 362 "Signature Objects".
  Patch by Yury Selivanov.

- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster.

- Issue #444582: Add shutil.which, for finding programs on the system path.
  Original patch by Erik Demaine, with later iterations by Jan Killian
  and Brian Curtin.

- Issue #14837: SSL errors now have ``library`` and ``reason`` attributes
  describing precisely what happened and in which OpenSSL submodule.  The
  str() of a SSLError is also enhanced accordingly.

- Issue #9527: datetime.astimezone() method will now supply a class
  timezone instance corresponding to the system local timezone when
  called with no arguments.

- Issue #14653: email.utils.mktime_tz() no longer relies on system
  mktime() when timezone offest is supplied.

- Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use
  of predefined compression dictionaries. Original patch by Sam Rushing.

- Fix GzipFile's handling of filenames given as bytes objects.

- Issue #14772: Return destination values from some shutil functions.

- Issue #15064: Implement context manager protocol for multiprocessing types

- Issue #15101: Make pool finalizer avoid joining current thread.

- Issue #14657: The frozen instance of importlib used for bootstrap is now
  also the module imported as importlib._bootstrap.

- Issue #14055: Add __sizeof__ support to _elementtree.

- Issue #15054: A bug in tokenize.tokenize that caused string literals
  with 'b' prefixes to be incorrectly tokenized has been fixed.
  Patch by Serhiy Storchaka.

- Issue #15006: Allow equality comparison between naive and aware
  time or datetime objects.

- Issue #14982: Document that pkgutil's iteration functions require the
  non-standard iter_modules() method to be defined by an importer (something
  the importlib importers do not define).

- Issue #15036: Mailbox no longer throws an error if a flush is done
  between operations when removing or changing multiple items in mbox,
  MMDF, or Babyl mailboxes.

- Issue #14059: Implement multiprocessing.Barrier.

- Issue #15061: The inappropriately named hmac.secure_compare has been
  renamed to hmac.compare_digest, restricted to operating on bytes inputs
  only and had its documentation updated to more accurately reflect both its
  intent and its limitations

- Issue #13841: Make child processes exit using sys.exit() on Windows.

- Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API.
  Patch by Robin Schreiber.

- Issue #1667546: On platforms supporting tm_zone and tm_gmtoff fields
  in struct tm, time.struct_time objects returned by time.gmtime(),
  time.localtime() and time.strptime() functions now have tm_zone and
  tm_gmtoff attributes.  Original patch by Paul Boddie.

- Rename adjusted attribute to adjustable in time.get_clock_info() result.

- Issue #3518: Remove references to non-existent BaseManager.from_address()
  method.

- Issue #13857: Added textwrap.indent() function (initial patch by Ezra
  Berch)

- Issue #2736: Added datetime.timestamp() method.

- Issue #13854: Make multiprocessing properly handle non-integer
  non-string argument to SystemExit.

- Issue #12157: Make pool.map() empty iterables correctly.  Initial
  patch by mouad.

- Issue #11823: disassembly now shows argument counts on calls with keyword args.

- Issue #14711: os.stat_float_times() has been deprecated.

- LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a".

- The bz2 and lzma modules now each contain an open() function, allowing
  compressed files to readily be opened in text mode as well as binary mode.

- BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their
  first argument, rather than requiring a separate "fileobj" argument.

- gzip.open() now accepts file objects as well as filenames.

- Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError
  when the path existed and had the S_ISGID mode bit set when it was
  not explicitly asked for.  This is no longer an exception as mkdir
  cannot control if the OS sets that bit for it or not.

- Issue #14989: Make the CGI enable option to http.server available via command
  line.

- Issue #14987: Add a missing import statement to inspect.

- Issue #1079: email.header.decode_header now correctly parses all the examples
  in RFC2047.  There is a necessary visible behavior change: the leading and/or
  trailing whitespace on ASCII parts is now preserved.

- Issue #14969: Better handling of exception chaining in contextlib.ExitStack

- Issue #14962: Update text coloring in IDLE shell window after changing
  options.  Patch by Roger Serwy.

- Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative
  algorithm (Patch by Alon Horev)

- Issue #14785: Add sys._debugmallocstats() to help debug low-level memory
  allocation issues

- Issue #14443: Ensure that .py files are byte-compiled with the correct Python
  executable within bdist_rpm even on older versions of RPM

C-API
-----

- Issue #13783: Inadvertent additions to the public C API in the PEP 380
  implementation have either been removed or marked as private interfaces.

Extension Modules
-----------------

- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c.

Documentation
-------------

- Issue #15081: Document PyState_FindModule.
  Patch by Robin Schreiber.

- Issue #14814: Added first draft of ipaddress module API reference

Tests
-----

- Issue #14769: test_capi now has SkipitemTest, which cleverly checks
  for "parity" between PyArg_ParseTuple() and the Python/getargs.c static
  function skipitem() for all possible "format units".

- test_nntplib now tolerates being run from behind NNTP gateways that add
  "X-Antivirus" headers to articles

- Issue #15043: test_gdb is now skipped entirely if gdb security settings
  block loading of the gdb hooks

- Issue #14963: Add test cases for exception handling behaviour
  in contextlib.ExitStack (Initial patch by Alon Horev)

Build
-----

- Issue #13590: Improve support for OS X Xcode 4:
    * Try to avoid building Python or extension modules with problematic
      llvm-gcc compiler.
    * Since Xcode 4 removes ppc support, extension module builds now
      check for ppc compiler support and automatically remove ppc and
      ppc64 archs when not available.
    * Since Xcode 4 no longer install SDKs in default locations,
      extension module builds now revert to using installed headers
      and libs if the SDK used to build the interpreter is not
      available.
    * Update ./configure to use better defaults for universal builds;
      in particular, --enable-universalsdk=yes uses the Xcode default
      SDK and --with-universal-archs now defaults to "intel" if ppc
      not available.

- Issue #14225: Fix Unicode support for curses (#12567) on OS X

- Issue #14928: Fix importlib bootstrap issues by using a custom executable
  (Modules/_freeze_importlib) to build Python/importlib.h.


What's New in Python 3.3.0 Alpha 4?
===================================

*Release date: 31-May-2012*

Core and Builtins
-----------------

- Issue #14835: Make plistlib output empty arrays & dicts like OS X.
  Patch by Sidney San Martín.

- Issue #14744: Use the new _PyUnicodeWriter internal API to speed up
  str%args and str.format(args).

- Issue #14930: Make memoryview objects weakrefable.

- Issue #14775: Fix a potential quadratic dict build-up due to the garbage
  collector repeatedly trying to untrack dicts.

- Issue #14857: fix regression in references to PEP 3135 implicit __class__
  closure variable (Reopens issue #12370)

- Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip.

- Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith.

- Issue #14494: Fix __future__.py and its documentation to note that
  absolute imports are the default behavior in 3.0 instead of 2.7.
  Patch by Sven Marnach.

- Issue #9260: A finer-grained import lock.  Most of the import sequence
  now uses per-module locks rather than the global import lock, eliminating
  well-known issues with threads and imports.

- Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs.
  Patch by Serhiy Storchaka.

- asdl_seq and asdl_int_seq are now Py_ssize_t sized.

- Issue #14133 (PEP 415): Implement suppression of __context__ display with an
  attribute on BaseException. This replaces the original mechanism of PEP 409.

- Issue #14417: Mutating a dict during lookup now restarts the lookup instead
  of raising a RuntimeError (undoes issue #14205).

- Issue #14738: Speed-up UTF-8 decoding on non-ASCII data.  Patch by Serhiy
  Storchaka.

- Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks
  in old-style string formatting.

- Issue #14705: The PyArg_Parse() family of functions now support the 'p' format
  unit, which accepts a "boolean predicate" argument.  It converts any Python
  value into an integer--0 if it is "false", and 1 otherwise.

Library
-------

- Issue #14690: Use monotonic clock instead of system clock in the sched,
  subprocess and trace modules.

- Issue #14958: Change IDLE systax highlighting to recognize all string and
  byte literals supported in Python 3.3.

- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu.

- Issue #14443: Tell rpmbuild to use the correct version of Python in
  bdist_rpm. Initial patch by Ross Lagerwall.

- Issue #14929: Stop Idle 3.x from closing on Unicode decode errors when
  grepping. Patch by Roger Serwy.

- Issue #12515: email now registers a defect if it gets to EOF while parsing
  a MIME part without seeing the closing MIME boundary.

- Issue #12510: Attempting to get invalid tooltip no longer closes Idle.
  Other tooltipss have been corrected or improved and the number of tests
  has been tripled. Original patch by Roger Serwy.

- Issue #1672568: email now always decodes base64 payloads, adding padding and
  ignoring non-base64-alphabet characters if needed, and registering defects
  for any such problems.

- Issue #14925: email now registers a defect when the parser decides that there
  is a missing header/body separator line.  MalformedHeaderDefect, which the
  existing code would never actually generate, is deprecated.

- Issue #10365: File open dialog now works instead of crashing even when
  the parent window is closed before the dialog. Patch by Roger Serwy.

- Issue #8739: Updated smtpd to support RFC 5321, and added support for the
  RFC 1870 SIZE extension.

- Issue #665194: Added a localtime function to email.utils to provide an
  aware local datetime for use in setting Date headers.

- Issue #12586: Added new provisional policies that implement convenient
  unicode support for email headers.  See What's New for details.

- Issue #14731: Refactored email Policy framework to support full backward
  compatibility with Python 3.2 by default yet allow for the introduction of
  new features through new policies.  Note that Policy.must_be_7bit is renamed
  to cte_type.

- Issue #14876: Use user-selected font for highlight configuration.

- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals.
  Have ascii characters in help.

- Issue #14548: Make multiprocessing finalizers check pid before
  running to cope with possibility of gc running just after fork.

- Issue #14863: Update the documentation of os.fdopen() to reflect the
  fact that it's only a thin wrapper around open() anymore.

- Issue #14036: Add an additional check to validate that port in urlparse does
  not go in illegal range and returns None.

- Issue #14862: Add missing names to os.__all__

- Issue #14875: Use float('inf') instead of float('1e66666') in the json module.

- Issue #13585: Added contextlib.ExitStack

- PEP 3144, Issue #14814: Added the ipaddress module

- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie
  Header in Cookie.py.

- Issue #14588: The types module now provide new_class() and prepare_class()
  functions to support PEP 3115 compliant dynamic class creation. Patch by
  Daniel Urban and Nick Coghlan.

- Issue #13152: Allow to specify a custom tabsize for expanding tabs in
  textwrap. Patch by John Feuerstein.

- Issue #14721: Send the correct 'Content-length: 0' header when the body is an
  empty string ''. Initial Patch contributed by Arve Knudsen.

- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for
  ports stricter.

- Issue #9374: Generic parsing of query and fragment portions of url for any
  scheme. Supported both by RFC3986 and RFC2396.

- Issue #14798: Fix the functions in pyclbr to raise an ImportError
  when the first part of a dotted name is not a package. Patch by
  Xavier de Gaye.

- Issue #12098: multiprocessing on Windows now starts child processes
  using the same sys.flags as the current process.  Initial patch by
  Sergey Mezentsev.

- Issue #13031: Small speed-up for tarfile when unzipping tarfiles.
  Patch by Justin Peel.

- Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument
  to use the default certificate store.  Initial patch by James Oakley.

- Issue #14829: Fix bisect and range() indexing with large indices
  (>= 2 ** 32) under 64-bit Windows.

- Issue #14732: The _csv module now uses PEP 3121 module initialization.
  Patch by Robin Schreiber.

- Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server
  and http.client. Patch by EungJun Yi.

- Issue #14777: tkinter may return undecoded UTF-8 bytes as a string when
  accessing the Tk clipboard.  Modify clipboad_get() to first request type
  UTF8_STRING when no specific type is requested in an X11 windowing
  environment, falling back to the current default type STRING if that fails.
  Original patch by Thomas Kluyver.

- Issue #14773: Fix os.fwalk() failing on dangling symlinks.

- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic
  Authentation in urllib2.

- Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add
  doc entry. Add tarfile.filemode alias with deprecation warning.

- Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects.

- Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate
  timing attacks. Patch by Jon Oberheide.

- Add importlib.util.resolve_name().

- Issue #14366: Support lzma compression in zip files.
  Patch by Serhiy Storchaka.

- Issue #13959: Introduce importlib.find_loader() and document
  imp.find_module/load_module as deprecated.

- Issue #14082: shutil.copy2() now copies extended attributes, if possible.
  Patch by Hynek Schlawack.

- Issue #13959: Make importlib.abc.FileLoader.load_module()/get_filename() and
  importlib.machinery.ExtensionFileLoader.load_module() have their single
  argument be optional. Allows for the replacement (and thus deprecation) of
  imp.load_source()/load_package()/load_compiled().

- Issue #13959: imp.get_suffixes() has been deprecated in favour of the new
  attributes on importlib.machinery: SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES,
  OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES, and EXTENSION_SUFFIXES. This
  led to an indirect deprecation of inspect.getmoduleinfo().

- Issue #14662: Prevent shutil failures on OS X when destination does not
  support chflag operations.  Patch by Hynek Schlawack.

- Issue #14157: Fix time.strptime failing without a year on February 29th.
  Patch by Hynek Schlawack.

- Issue #14753: Make multiprocessing's handling of negative timeouts
  the same as it was in Python 3.2.

- Issue #14583: Fix importlib bug when a package's __init__.py would first
  import one of its modules then raise an error.

- Issue #14741: Fix missing support for Ellipsis ('...') in parser module.

- Issue #14697: Fix missing support for set displays and set comprehensions in
  parser module.

- Issue #14701: Fix missing support for 'raise ... from' in parser module.

- Add support for timeouts to the acquire() methods of
  multiprocessing's lock/semaphore/condition proxies.

- Issue #13989: Add support for text mode to gzip.open().

- Issue #14127: The os.stat() result object now provides three additional
  fields: st_ctime_ns, st_mtime_ns, and st_atime_ns, providing those times as an
  integer with nanosecond resolution.  The functions os.utime(), os.lutimes(),
  and os.futimes() now accept a new parameter, ns, which accepts mtime and atime
  as integers with nanosecond resolution.

- Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime
  on filesystems providing nanosecond resolution.

Tools/Demos
-----------

- Issue #14695: Bring Tools/parser/unparse.py support up to date with
  the Python 3.3 Grammar.

Build
-----

- Issue #14472: Update .gitignore. Patch by Matej Cepl.

- Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c.

- Issue #14693: Under non-Windows platforms, hashlib's fallback modules are
  always compiled, even if OpenSSL is present at build time.

- Issue #13210: Windows build now uses VS2010, ported from VS2008.

Documentation
-------------

- Issue #14588: The language reference now accurately documents the Python 3
  class definition process. Patch by Nick Coghlan.

- Issue #14943: Correct a default argument value for winreg.OpenKey
  and correctly list the argument names in the function's explanation.


What's New in Python 3.3.0 Alpha 3?
===================================

*Release date: 01-May-2012*

Core and Builtins
-----------------

- Issue #14699: Fix calling the classmethod descriptor directly.

- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed.

- Issue #14521: Make result of float('nan') and float('-nan') more consistent
  across platforms.

- Issue #14646: __import__() sets __loader__ if the loader did not.

- Issue #14605: No longer have implicit entries in sys.meta_path. If
  sys.meta_path is found to be empty, raise ImportWarning.

- Issue #14605: No longer have implicit entries in sys.path_hooks. If
  sys.path_hooks is found to be empty, a warning will be raised. None is now
  inserted into sys.path_importer_cache if no finder was discovered. This also
  means imp.NullImporter is no longer implicitly used.

- Issue #13903: Implement PEP 412. Individual dictionary instances can now share
  their keys with other dictionaries. Classes take advantage of this to share
  their instance dictionary keys for improved memory and performance.

- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError
  when repr() or str() is called on such an object.

- Issue #14658: Fix binding a special method to a builtin implementation of a
  special method with a different name.

- Issue #14630: Fix a memory access bug for instances of a subclass of int
  with value 0.

- Issue #14339: Speed improvements to bin, oct and hex functions.  Patch by
  Serhiy Storchaka.

- Issue #14098: New functions PyErr_GetExcInfo and PyErr_SetExcInfo.
  Patch by Stefan Behnel.

- Issue #14385: It is now possible to use a custom type for the __builtins__
  namespace, instead of a dict. It can be used for sandboxing for example.
  Raise also a NameError instead of ImportError if __build_class__ name if not
  found in __builtins__.

- Issue #12599: Be more strict in accepting None compared to a false-like
  object for importlib.util.module_for_loader and
  importlib.machinery.PathFinder.

- Issue #14612: Fix jumping around with blocks by setting f_lineno.

- Issue #14592: Attempting a relative import w/o __package__ or __name__ set in
  globals raises a KeyError.

- Issue #14607: Fix keyword-only arguments which started with ``__``.

- Issue #10854: The ImportError raised when an extension module on Windows
  fails to import now uses the new path and name attributes from
  Issue #1559549.

- Issue #13889: Check and (if necessary) set FPU control word before calling
  any of the dtoa.c string <-> float conversion functions, on MSVC builds of
  Python.  This fixes issues when embedding Python in a Delphi app.

- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0
  instead of -1 and removing support for negative values.

- Issue #2377: Make importlib the implementation of __import__().

- Issue #1559549: ImportError now has 'name' and 'path' attributes that are set
  using keyword arguments to its constructor. They are currently not set by
  import as they are meant for use by importlib.

- Issue #14474: Save and restore exception state in thread.start_new_thread()
  while writing error message if the thread leaves a unhandled exception.

- Issue #13019: Fix potential reference leaks in bytearray.extend().  Patch
  by Suman Saha.

Library
-------

- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'.

- Issue #14371: Support bzip2 in zipfile module.  Patch by Serhiy Storchaka.

- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running
  step.  Patch by Xavier de Gaye.

- Issue #14696: Fix parser module to understand 'nonlocal' declarations.

- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near
  the DST transition.  Patch by Joe Peterson.

- Issue #9154: Fix parser module to understand function annotations.

- Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the
  client ip address instead client hostname. Patch by Charles-François Natali.

- Issue #14309: Deprecate time.clock(), use time.perf_counter() or
  time.process_time() instead.

- Issue #14428: Implement the PEP 418. Add time.get_clock_info(),
  time.perf_counter() and time.process_time() functions, and rename
  time.steady() to time.monotonic().

- Issue #14646: importlib.util.module_for_loader() now sets __loader__ and
  __package__ (when possible).

- Issue #14664: It is now possible to use @unittest.skip{If,Unless} on a
  test class that doesn't inherit from TestCase (i.e. a mixin).

- Issue #4892: multiprocessing Connections can now be transferred over
  multiprocessing Connections.  Patch by Richard Oudkerk (sbt).

- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when
  the links were not located in an archive subdirectory.

- Issue #14638: pydoc now treats non-string __name__ values as if they
  were missing, instead of raising an error.

- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites
  which send EOF without trailing \r\n.

- Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder,
  SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader).

- Issue #13959: imp.cache_from_source()/source_from_cache() now follow
  os.path.join()/split() semantics for path manipulation instead of its prior,
  custom semantics of caring the right-most path separator forward in path
  joining.

- Issue #2193: Allow ":" character in Cookie NAME values.

- Issue #14629: tokenizer.detect_encoding will specify the filename in the
  SyntaxError exception if found at readline.__self__.name.

- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the
  first two lines have non-UTF-8 characters without an encoding declaration.

- Issue #14308: Fix an exception when a "dummy" thread is in the threading
  module's active list after a fork().

- Issue #11750: The Windows API functions scattered in the _subprocess and
  _multiprocessing.win32 modules now live in a single module "_winapi".
  Patch by sbt.

- Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt.

- Issue #14538: HTMLParser can now parse correctly start tags that contain
  a bare '/'.

- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message.

- Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType.

- Issue #13959: Make imp.reload() always use a module's __loader__ to perform
  the reload.

- Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for
  re-implementing parts of the module in pure Python.

- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied
  to a collection of size > sys.maxsize / 2.

- Have importlib take advantage of ImportError's new 'name' and 'path'
  attributes.

- Issue #14399: zipfile now recognizes that the archive has been modified even
  if only the comment is changed.  In addition, the TypeError that results from
  trying to set a non-binary value as a comment is now now raised at the time
  the comment is set rather than at the time the zipfile is written.

- trace.CoverageResults.is_ignored_filename() now ignores any name that starts
  with "<" and ends with ">" instead of special-casing "<string>" and
  "<doctest ".

- Issue #12537: The mailbox module no longer depends on knowledge of internal
  implementation details of the email package Message object.

- Issue #7978: socketserver now restarts the select() call when EINTR is
  returned.  This avoids crashing the server loop when a signal is received.
  Patch by Jerzy Kozera.

- Issue #14522: Avoid duplicating socket handles in multiprocessing.connection.
  Patch by sbt.

- Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder.

- Issue #8515: Set __file__ when run file in IDLE.
  Initial patch by Bruce Frederiksen.

- Issue #14496: Fix wrong name in idlelib/tabbedpages.py.
  Patch by Popa Claudiu.

- Issue #3033: Add displayof parameter to tkinter font. Patch by Guilherme Polo.

- Issue #14482: Raise a ValueError, not a NameError, when trying to create
  a multiprocessing Client or Listener with an AF_UNIX type address under
  Windows.  Patch by Popa Claudiu.

- Issue #802310: Generate always unique tkinter font names if not directly passed.

- Issue #14151: Raise a ValueError, not a NameError, when trying to create
  a multiprocessing Client or Listener with an AF_PIPE type address under
  non-Windows platforms.  Patch by Popa Claudiu.

- Issue #14493: Use gvfs-open or xdg-open in webbrowser.

Build
-----

- "make touch" will now touch generated files that are checked into Mercurial,
  after a "hg update" which failed to bring the timestamps into the right order.

Tests
-----

- Issue #14026: In test_cmd_line_script, check that sys.argv is populated
  correctly for the various invocation approaches (Patch by Jason Yeo)

- Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging
  message (Patch by Jason Yeo)

- Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing
  a test failure in test_ssl.

- Issue #14355: Regrtest now supports the standard unittest test loading, and
  will use it if a test file contains no `test_main` method.

Tools / Demos
-------------

- Issue #3561: The Windows installer now has an option, off by default, for
  placing the Python installation into the system "Path" environment variable.

- Issue #13165: stringbench is now available in the Tools/stringbench folder.
  It used to live in its own SVN project.


What's New in Python 3.3.0 Alpha 2?
===================================

*Release date: 01-Apr-2012*

Core and Builtins
-----------------

- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they
  are passed arguments and their complementary method is not overridden.

- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
  the module name that was not interned.

- Issue #14331: Use significantly less stack space when importing modules by
  allocating path buffers on the heap instead of the stack.

- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
  passed strings.

- Issue #1469629: Allow cycles through an object's __dict__ slot to be
  collected. (For example if ``x.__dict__ is x``).

- Issue #14205: dict lookup raises a RuntimeError if the dict is modified
  during a lookup.

- Issue #14220: When a generator is delegating to another iterator with the
  yield from syntax, it needs to have its ``gi_running`` flag set to True.

- Issue #14435: Remove dedicated block allocator from floatobject.c and rely
  on the PyObject_Malloc() api like all other objects.

- Issue #14471: Fix a possible buffer overrun in the winreg module.

- Issue #14288: Allow the serialization of builtin iterators

Library
-------

- Issue #14300: Under Windows, sockets created using socket.dup() now allow
  overlapped I/O.  Patch by sbt.

- Issue #13872: socket.detach() now marks the socket closed (as mirrored
  in the socket repr()).  Patch by Matt Joiner.

- Issue #14406: Fix a race condition when using ``concurrent.futures.wait(
  return_when=ALL_COMPLETED)``.  Patch by Matt Joiner.

- Issue #5136: deprecate old, unused functions from tkinter.

- Issue #14409: IDLE now properly executes commands in the Shell window
  when it cannot read the normal config files on startup and
  has to use the built-in default key bindings.
  There was previously a bug in one of the defaults.

- Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants
  if they are defined in <syslog.h>.

- IDLE can be launched as python -m idlelib

- Issue #14295: Add unittest.mock

- Issue #7652: Add --with-system-libmpdec option to configure for linking
  the _decimal module against an installed libmpdec.

- Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode
  with no charset specified.

- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on
  OSX; avoid to call handle_connect in case of a disconnected socket which
  was not meant to connect.

- Issue #14204: The ssl module now has support for the Next Protocol
  Negotiation extension, if available in the underlying OpenSSL library.
  Patch by Colin Marc.

- Issue #3035: Unused functions from tkinter are marked as pending deprecated.

- Issue #12757: Fix the skipping of doctests when python is run with -OO so
  that it works in unittest's verbose mode as well as non-verbose mode.

- Issue #7652: Integrate the decimal floating point libmpdec library to speed
  up the decimal module. Performance gains of the new C implementation are
  between 10x and 100x, depending on the application.

- Issue #3573: IDLE hangs when passing invalid command line args
  (directory(ies) instead of file(s)) (Patch by Guilherme Polo)

- Issue #14269: SMTPD now conforms to the RFC and requires a HELO command
  before MAIL, RCPT, or DATA.

- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr
  attribute.

- Issue #14344: fixed the repr of email.policy objects.

- Issue #11686: Added missing entries to email package __all__ lists
  (mostly the new Bytes classes).

- Issue #14335: multiprocessing's custom Pickler subclass now inherits from
  the C-accelerated implementation.  Patch by sbt.

- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem.

- Issue #11199: Fix the with urllib which hangs on particular ftp urls.

- Improve the memory utilization and speed of functools.lru_cache.

- Issue #14222: Use the new time.steady() function instead of time.time() for
  timeout in queue and threading modules to not be affected of system time
  update.

- Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix.

- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash
  table internal to the pyexpat module's copy of the expat library to avoid a
  denial of service due to hash collisions.  Patch by David Malcolm with some
  modifications by the expat project.

- Issue #14200: Idle shell crash on printing non-BMP unicode character.

- Issue #12818: format address no longer needlessly \ escapes ()s in names when
  the name ends up being quoted.

- Issue #14062: BytesGenerator now correctly folds Header objects,
  including using linesep when folding.

- Issue #13839: When invoked on the command-line, the pstats module now
  accepts several filenames of profile stat files and merges them all.
  Patch by Matt Joiner.

- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers
  instead of raising an error.  This fixes a regression relative to 2.7.

- Issue #989712: Support using Tk without a mainloop.

- Issue #5219: Prevent event handler cascade in IDLE.

- Issue #3835: Refuse to use unthreaded Tcl in threaded Python.

- Issue #2843: Add new Tk API to Tkinter.

- Issue #14184: Increase the default stack size for secondary threads on
  Mac OS X to avoid interpreter crashes when using threads on 10.7.

- Issue #14180: datetime.date.fromtimestamp(),
  datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp()
  now raise an OSError instead of ValueError if localtime() or gmtime() failed.

- Issue #14180: time.ctime(), gmtime(), time.localtime(),
  datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and
  datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of
  a ValueError, if the timestamp does not fit in time_t.

- Issue #14180: datetime.datetime.fromtimestamp() and
  datetime.datetime.utcfromtimestamp() now round microseconds towards zero
  instead of rounding to nearest with ties going away from zero.

- Issue #10543: Fix unittest test discovery with Jython bytecode files.

- Issue #1178863: Separate initialisation from setting when initializing
  Tkinter.Variables; harmonize exceptions to ValueError; only delete variables
  that have not been deleted; assert that variable names are strings.

- Issue #14104: Implement time.monotonic() on Mac OS X, patch written by
  Nicholas Riley.

- Issue #13394: the aifc module now uses warnings.warn() to signal warnings.

- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
  Windows when the child process has already exited.

- Issue #14223: curses.addch() is no more limited to the range 0-255 when the
  Python curses is not linked to libncursesw. It was a regression introduced
  in Python 3.3a1.

- Issue #14168: Check for presence of Element._attrs in minidom before
  accessing it.

- Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows.
  Also, add a multiprocessing.connection.wait(rlist, timeout=None) function
  for polling multiple objects at once.  Patch by sbt.

- Issue #14007: Accept incomplete TreeBuilder objects (missing start, end,
  data or close method) for the Python implementation as well.
  Drop the no-op TreeBuilder().xml() method from the C implementation.

- Issue #14210: pdb now has tab-completion not only for command names, but
  also for their arguments, wherever possible.

- Issue #14310: Sockets can now be with other processes on Windows using
  the api socket.socket.share() and socket.fromshare().

- Issue #10576: The gc module now has a 'callbacks' member that will get
  called when garbage collection takes place.

Build
-----

- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.

- Issue #14387: Do not include accu.h from Python.h.

- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
  Based on patch from Hervé Coatanhay.

- Issue #14321: Do not run pgen during the build if files are up to date.
Documentation
-------------

- Issue #14034: added the argparse tutorial.


- Issue #14324: Fix configure tests for cross builds.

- Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in
  config.{guess,sub}. Don't use uname calls for cross builds.

Extension Modules
-----------------

- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and
  ctypes.c_float that caused an incorrect exception to be returned in the
  case of overflow has been fixed.

- Issue #14212: The re module didn't retain a reference to buffers it was
  scanning, resulting in segfaults.

- Issue #14259: The finditer() method of re objects did not take any
  keyword arguments, contrary to the documentation.

- Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS).

Tests
-----

- Issue #14442: Add missing errno import in test_smtplib.

- Issue #8315: (partial fix) python -m unittest test.test_email now works.


What's New in Python 3.3.0 Alpha 1?
===================================

*Release date: 05-Mar-2012*

Core and Builtins
-----------------

- Issue #14172: Fix reference leak when marshalling a buffer-like object
  (other than a bytes object).

- Issue #13521: dict.setdefault() now does only one lookup for the given key,
  making it "atomic" for many purposes.  Patch by Filip Gruszczyński.

- PEP 409, Issue #6210: "raise X from None" is now supported as a means of
  suppressing the display of the chained exception context. The chained
  context still remains available as the __context__ attribute.

- Issue #10181: New memoryview implementation fixes multiple ownership
  and lifetime issues of dynamically allocated Py_buffer members (#9990)
  as well as crashes (#8305, #7433). Many new features have been added
  (See whatsnew/3.3), and the documentation has been updated extensively.
  The ndarray test object from _testbuffer.c implements all aspects of
  PEP-3118, so further development towards the complete implementation
  of the PEP can proceed in a test-driven manner.

  Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
  and many ideas.

- Issue #12834: Fix incorrect results of memoryview.tobytes() for
  non-contiguous arrays.

- Issue #5231: Introduce memoryview.cast() method that allows changing
  format and shape without making a copy of the underlying memory.

- Issue #14084: Fix a file descriptor leak when importing a module with a
  bad encoding.

- Upgrade Unicode data to Unicode 6.1.

- Issue #14040: Remove rarely used file name suffixes for C extensions
  (under POSIX mainly).

- Issue #14051: Allow arbitrary attributes to be set of classmethod and
  staticmethod.

- Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect
  against denial of service attacks due to hash collisions within the dict and
  set types.  Patch by David Malcolm, based on work by Victor Stinner.

- Issue #13020: Fix a reference leak when allocating a structsequence object
  fails.  Patch by Suman Saha.

- Issue #13908: Ready types returned from PyType_FromSpec.

- Issue #11235: Fix OverflowError when trying to import a source file whose
  modification time doesn't fit in a 32-bit timestamp.

- Issue #12705: A SyntaxError exception is now raised when attempting to
  compile multiple statements as a single interactive statement.

- Fix the builtin module initialization code to store the init function for
  future reinitialization.

- Issue #8052: The posix subprocess module would take a long time closing
  all possible file descriptors in the child process rather than just open
  file descriptors.  It now closes only the open fds if possible for the
  default close_fds=True behavior.

- Issue #13629: Renumber the tokens in token.h so that they match the indexes
  into _PyParser_TokenNames.

- Issue #13752: Add a casefold() method to str.

- Issue #13761: Add a "flush" keyword argument to the print() function,
  used to ensure flushing the output stream.

- Issue #13645: pyc files now contain the size of the corresponding source
  code, to avoid timestamp collisions (especially on filesystems with a low
  timestamp resolution) when checking for freshness of the bytecode.

- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to
  subgenerators (initial patch by Greg Ewing, integration into 3.3 by
  Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)

- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix
  as well as ``br``.

- Issue #12736: Use full unicode case mappings for upper, lower, and title case.

- Issue #12760: Add a create mode to open(). Patch by David Townshend.

- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().

- Issue #13577: Built-in methods and functions now have a __qualname__.
  Patch by sbt.

- Issue #6695: Full garbage collection runs now clear the freelist of set
  objects.  Initial patch by Matthias Troffaes.

- Fix OSError.__init__ and OSError.__new__ so that each of them can be
  overriden and take additional arguments (followup to issue #12555).

- Fix the fix for issue #12149: it was incorrect, although it had the side
  effect of appearing to resolve the issue.  Thanks to Mark Shannon for
  noticing.

- Issue #13505: Pickle bytes objects in a way that is compatible with
  Python 2 when using protocols <= 2.

- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER.  (Fix
  given by Campbell Barton).

- Issue #13503: Use a more efficient reduction format for bytearrays with
  pickle protocol >= 3.  The old reduction format is kept with older protocols
  in order to allow unpickling under Python 2.  Patch by Irmen de Jong.

- Issue #7111: Python can now be run without a stdin, stdout or stderr
  stream.  It was already the case with Python 2.  However, the corresponding
  sys module entries are now set to None (instead of an unusable file object).

- Issue #11849: Ensure that free()d memory arenas are really released
  on POSIX systems supporting anonymous memory mappings.  Patch by
  Charles-François Natali.

- Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers
  different than "strict" anymore. The caller was unable to compute the
  size of the output buffer: it depends on the error handler.

- PEP 3155 / issue #13448: Qualified name for classes and functions.

- Issue #13436: Fix a bogus error message when an AST object was passed
  an invalid integer value.

- Issue #13411: memoryview objects are now hashable when the underlying
  object is hashable.

- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
  to allow compiling extension modules with -Wswitch-enum on gcc.
  Initial patch by Floris Bruynooghe.

- Issue #10227: Add an allocation cache for a single slice object.  Patch by
  Stefan Behnel.

- Issue #13393: BufferedReader.read1() now asks the full requested size to
  the raw stream instead of limiting itself to the buffer size.

- Issue #13392: Writing a pyc file should now be atomic under Windows as well.

- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder
  already accepts them).

- Issue #13389: Full garbage collection passes now clear the freelists for
  list and dict objects.  They already cleared other freelists in the
  interpreter.

- Issue #13327: Remove the need for an explicit None as the second argument
  to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in
  order to update to the current time. Also added keyword argument
  handling to os.utimensat in order to remove the need for explicit None.

- Issue #13350: Simplify some C code by replacing most usages of
  PyUnicode_Format by PyUnicode_FromFormat.

- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode
  error handler in interactive mode (when calling into PyOS_Readline()).

- Issue #9896: Add start, stop, and step attributes to range objects.

- Issue #13343: Fix a SystemError when a lambda expression uses a global
  variable in the default value of a keyword-only argument: ``lambda *,
  arg=GLOBAL_NAME: None``

- Issue #12797: Added custom opener parameter to builtin open() and
  FileIO.open().

- Issue #10519: Avoid unnecessary recursive function calls in
  setobject.c.

- Issue #10363: Deallocate global locks in Py_Finalize().

- Issue #13018: Fix reference leaks in error paths in dictobject.c.
  Patch by Suman Saha.

- Issue #13201: Define '==' and '!=' to compare range objects based on
  the sequence of values they define (instead of comparing based on
  object identity).

- Issue #1294232: In a few cases involving metaclass inheritance, the
  interpreter would sometimes invoke the wrong metaclass when building a new
  class object. These cases now behave correctly. Patch by Daniel Urban.

- Issue #12753: Add support for Unicode name aliases and named sequences.
  Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases,
  and ``unicodedata.lookup()`` resolves named sequences too.

- Issue #12170: The count(), find(), rfind(), index() and rindex() methods
  of bytes and bytearray objects now accept an integer between 0 and 255
  as their first argument.  Patch by Petri Lehtinen.

- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler
  warnings. Patch by Josh Triplett and Petri Lehtinen.

- Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore
  error handlers on all Windows versions. The MBCS codec is now supporting all
  error handlers, instead of only replace to encode and ignore to decode.

- Issue #13188: When called without an explicit traceback argument,
  generator.throw() now gets the traceback from the passed exception's
  ``__traceback__`` attribute.  Patch by Petri Lehtinen.

- Issue #13146: Writing a pyc file is now atomic under POSIX.

- Issue #7833: Extension modules built using distutils on Windows will no
  longer include a "manifest" to prevent them failing at import time in some
  embedded situations.

- PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy.

- Add internal API for static strings (_Py_identifier et al.).

- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described
  as "The pipe is being closed") is now mapped to POSIX errno EPIPE
  (previously EINVAL).

- Issue #12911: Fix memory consumption when calculating the repr() of huge
  tuples or lists.

- PEP 393: flexible string representation. Thanks to Torsten Becker for the
  initial implementation, and Victor Stinner for various bug fixes.

- Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split,
  and bytearray.split may now be passed as keyword arguments.

- Issue #13012: The 'keepends' parameter to str.splitlines may now be passed
  as a keyword argument:  "my_string.splitlines(keepends=True)".  The same
  change also applies to bytes.splitlines and bytearray.splitlines.

- Issue #7732: Don't open a directory as a file anymore while importing a
  module. Ignore the direcotry if its name matchs the module name (e.g.
  "__init__.py") and raise a ImportError instead.

- Issue #13021: Missing decref on an error path.  Thanks to Suman Saha for
  finding the bug and providing a patch.

- Issue #12973: Fix overflow checks that relied on undefined behaviour in
  list_repeat (listobject.c) and islice_next (itertoolsmodule.c).  These bugs
  caused test failures with recent versions of Clang.

- Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write
  atime and mtime with nanosecond precision on modern POSIX platforms.

- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now
  mapped to POSIX errno ENOTDIR (previously EINVAL).

- Issue #9200: The str.is* methods now work with strings that contain non-BMP
  characters even in narrow Unicode builds.

- Issue #12791: Break reference cycles early when a generator exits with
  an exception.

- Issue #12773: Make __doc__ mutable on user-defined classes.

- Issue #12766: Raise a ValueError when creating a class with a class variable
  that conflicts with a name in __slots__.

- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
  titlecased and cased non-letter characters.

- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall
  outside the BMP.

- Issue #12575: Validate user-generated AST before it is compiled.

- Make type(None), type(Ellipsis), and type(NotImplemented) callable. They
  return the respective singleton instances.

- Forbid summing bytes with sum().

- Verify the types of AST strings and identifiers provided by the user before
  compiling them.

- Issue #12647: The None object now has a __bool__() method that returns False.
  Formerly, bool(None) returned False only because of special case logic
  in PyObject_IsTrue().

- Issue #12579: str.format_map() now raises a ValueError if used on a
  format string that contains positional fields. Initial patch by
  Julian Berman.

- Issue #10271: Allow warnings.showwarning() be any callable.

- Issue #11627: Fix segfault when __new__ on a exception returns a
  non-exception class.

- Issue #12149: Update the method cache after a type's dictionary gets
  cleared by the garbage collector.  This fixes a segfault when an instance
  and its type get caught in a reference cycle, and the instance's
  deallocator calls one of the methods on the type (e.g. when subclassing
  IOBase).  Diagnosis and patch by Davide Rizzo.

- Issue #9611, #9015: FileIO.read() clamps the length to INT_MAX on Windows.

- Issue #9642: Uniformize the tests on the availability of the mbcs codec, add
  a new HAVE_MBCS define.

- Issue #9642: Fix filesystem encoding initialization: use the ANSI code page
  on Windows if the mbcs codec is not available, and fail with a fatal error if
  we cannot get the locale encoding (if nl_langinfo(CODESET) is not available)
  instead of using UTF-8.

- When a generator yields, do not retain the caller's exception state on the
  generator.

- Issue #12475: Prevent generators from leaking their exception state into the
  caller's frame as they return for the last time.

- Issue #12291: You can now load multiple marshalled objects from a stream,
  with other data interleaved between marshalled objects.

- Issue #12356: When required positional or keyword-only arguments are not
  given, produce a informative error message which includes the name(s) of the
  missing arguments.

- Issue #12370: Fix super with no arguments when __class__ is overriden in the
  class body.

- Issue #12084: os.stat on Windows now works properly with relative symbolic
  links when called from any directory.

- Loosen type restrictions on the __dir__ method. __dir__ can now return any
  sequence, which will be converted to a list and sorted by dir().

- Issue #12265: Make error messages produced by passing an invalid set of
  arguments to a function more informative.

- Issue #12225: Still allow Python to build if Python is not in its hg repo or
  mercurial is not installed.

- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix
  the following case: sys.stdin.read() stopped with CTRL+d (end of file),
  raw_input() interrupted by CTRL+c.

- Issue #12216: Allow unexpected EOF errors to happen on any line of the file.

- Issue #12199: The TryExcept and TryFinally and AST nodes have been unified
  into a Try node.

- Issue #9670: Increase the default stack size for secondary threads on
  Mac OS X and FreeBSD to reduce the chances of a crash instead of a
  "maximum recursion depth" RuntimeError exception.
  (patch by Ronald Oussoren)

- Issue #12106: The use of the multiple-with shorthand syntax is now reflected
  in the AST.

- Issue #12190: Try to use the same filename object when compiling unmarshalling
  a code objects in the same file.

- Issue #12166: Move implementations of dir() specialized for various types into
  the __dir__() methods of those types.

- Issue #5715: In socketserver, close the server socket in the child process.

- Correct lookup of __dir__ on objects. Among other things, this causes errors
  besides AttributeError found on lookup to be propagated.

- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
  module. Patch written by Charles-François Natali.

- Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex
  methods to the socket module.

- Issue #12044: Fixed subprocess.Popen when used as a context manager to
  wait for the process to end when exiting the context to avoid unintentionally
  leaving zombie processes around.

- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
  clear the end-of-file indicator after CTRL+d.

- Issue #1856: Avoid crashes and lockups when daemon threads run while the
  interpreter is shutting down; instead, these threads are now killed when
  they try to take the GIL.

- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
  the check of the object type doesn't read the __class__ attribute anymore.
  Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
  str type). Patch written by Andreas Stührk.

- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
  APIs, to avoid a crash with the pthread implementation in RHEL 5.  Patch
  by Charles-François Natali.

- Issue #10914: Initialize correctly the filesystem codec when creating a new
  subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
  the ISO-8859-15 codec.

- Issue #11918: OS/2 and VMS are no more supported because of the lack of
  maintainer.

- Issue #6780: fix starts/endswith error message to mention that tuples are
  accepted too.

- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
  between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
  chars (e.g. "\U00012345"[0]).

- Issue #11845: Fix typo in rangeobject.c that caused a crash in
  compute_slice_indices.  Patch by Daniel Urban.

- Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait,
  subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and
  subprocess.check_output.  If the blocking operation takes more than `timeout`
  seconds, the `subprocess.TimeoutExpired` exception is raised.

- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
  (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
  written by Charles-Francois Natali.

- Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error.

- Issue #10785: Store the filename as Unicode in the Python parser.

- Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes
  on Windows.

- Issue #10998: Remove mentions of -Q, sys.flags.division_warning and
  Py_DivisionWarningFlag left over from Python 2.

- Issue #11244: Remove an unnecessary peepholer check that was preventing
  negative zeros from being constant-folded properly.

- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on
  Windows if the file is a TTY to workaround a Windows bug. The Windows console
  returns an error (12: not enough space error) on writing into stdout if
  stdout mode is binary and the length is greater than 66,000 bytes (or less,
  depending on heap usage).

- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to
  a possible crash when calling Py_SetPath().

- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
  3.2.0 where the stdout or stderr file descriptor being the same as the stdin
  file descriptor would raise an exception. webbrowser.open would fail. fixed.

- Issue #9856: Change object.__format__ with a non-empty format string
  to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning.
  In 3.4 it will be a TypeError.

- Issue #11244: The peephole optimizer is now able to constant-fold
  arbitrarily complex expressions.  This also fixes a 3.2 regression where
  operations involving negative numbers were not constant-folded.

- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when
  there are many tags (e.g. when using mq).  Patch by Nadeem Vawda.

- Issue #11335: Fixed a memory leak in list.sort when the key function
  throws an exception.

- Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is
  cached into the object. Examples: str.encode(), str.encode('utf-8'),
  PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8",
  NULL).

- Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats.

- Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse
  the format string in the 3 steps, fix crashs on invalid format strings.

- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers.

- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from
  UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
  Patch written by Ray Allen.

- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with
  a buffer struct having a NULL data pointer.

- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
  sys.stdin uses universal newline (replace '\r\n' by '\n').

- issue #11828: startswith and endswith don't accept None as slice index.
  Patch by Torsten Becker.

- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on
  narrow build.

- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
  It encoded the Unicode filename to UTF-8, but the encoding fails on
  undecodable filename (on surrogate characters) which raises an unexpected
  UnicodeEncodeError on recursion limit.

- Issue #11187: Remove bootstrap code (use ASCII) of
  PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
  locale encoding) in PyUnicode_EncodeFSDefault().

- Check for NULL result in PyType_FromSpec.

- Issue #10516: New copy() and clear() methods for lists and bytearrays.

- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is
  empty, instead of OverflowError.

- Issue #12380: The rjust, ljust and center methods of bytes and bytearray
  now accept a bytearray argument.

Library
-------

- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly
  return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been
  fixed.

- Issue #14166: Pickler objects now have an optional ``dispatch_table``
  attribute which allows to set custom per-pickler reduction functions.
  Patch by sbt.

- Issue #14177: marshal.loads() now raises TypeError when given an unicode
  string.  Patch by Guilherme Gonçalves.

- Issue #13550: Remove the debug machinery from the threading module: remove
  verbose arguments from all threading classes and functions.

- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
  WeakValueDictionary) to return a better approximation when some objects
  are dead or dying.  Moreover, the implementation is now O(1) rather than
  O(n).

- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode.
  Patch by Mikhail Novikov.

- Issue #11841: Fix comparison bug with 'rc' versions in packaging.version.
  Patch by Filip Gruszczyński.

- Issue #13447: Add a test file to host regression tests for bugs in the
  scripts found in the Tools directory.

- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils
  on Windows.  Also fixed in packaging.

- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions
  on 32-bit architectures. Initial patch by Philippe Devalkeneer.

- HTMLParser is now able to handle slashes in the start tag.

- Issue #13641: Decoding functions in the base64 module now accept ASCII-only
  unicode strings.  Patch by Catalin Iacob.

- Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a
  new importlib.invalidate_caches() function.

- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in
  SimpleXMLRPCServer upon malformed POST request.

- Issue #13961: Move importlib over to using os.replace() for atomic renaming.

- Do away with ambiguous level values (as suggested by PEP 328) in
  importlib.__import__() by raising ValueError when level < 0.

- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF.

- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert().

- Issue #13777: Add PF_SYSTEM sockets on OS X.
  Patch by Michael Goderbauer.

- Issue #13015: Fix a possible reference leak in defaultdict.__repr__.
  Patch by Suman Saha.

- Issue #1326113: distutils' and packaging's build_ext commands option now
  correctly parses multiple values (separated by whitespace or commas) given
  to their --libraries option.

- Issue #10287: nntplib now queries the server's CAPABILITIES first before
  sending MODE READER, and only sends it if not already in READER mode.
  Patch by Hynek Schlawack.

- Issue #13993: HTMLParser is now able to handle broken end tags when
  strict=False.

- Issue #13930: lib2to3 now supports writing converted output files to another
  directory tree as well as copying unchanged files and altering the file
  suffix.

- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields
  with a name that is a keyword or contains quotes. Patch by Marko
  Kohtala.

- Issue #10287: nntplib now queries the server's CAPABILITIES again after
  authenticating (since the result may change, according to RFC 4643).
  Patch by Hynek Schlawack.

- Issue #13989: Document that GzipFile does not support text mode, and give a
  more helpful error message when opened with an invalid mode string.

- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building
  Distutils-based packages with C extension modules may fail because
  Apple has removed gcc-4.2, the version used to build python.org
  64-bit/32-bit Pythons.  If the user does not explicitly override
  the default C compiler by setting the CC environment variable,
  Distutils will now attempt to compile extension modules with clang
  if gcc-4.2 is required but not found. Also as a convenience, if
  the user does explicitly set CC, substitute its value as the default
  compiler in the Distutils LDSHARED configuration variable for OS X.
  (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
  SDK, neither of which are available in Xcode 4.  This change does not
  attempt to override settings to support their use with Xcode 4.)

- Issue #13960: HTMLParser is now able to handle broken comments when
  strict=False.

- Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode,
  which is obsolete in Python 3.x. It's now aliased to str for
  backwards compatibility.

- When '' is a path (e.g. in sys.path), make sure __file__ uses the current
  working directory instead of '' in importlib.

- Issue #13609: Add two functions to query the terminal size:
  os.get_terminal_size (low level) and shutil.get_terminal_size (high level).
  Patch by Zbigniew Jędrzejewski-Szmek.

- Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime()
  instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock
  accuracy is between 0.5 ms and 15 ms).

- Issue #13846: Add time.monotonic(), monotonic clock.

- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on
  Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
  make sure two listeners can't bind to the same socket/pipe (or any existing
  socket/pipe).

- Issue #9021: Add an introduction to the copy module documentation.

- Issue #6005: Examples in the socket library documentation use sendall, where
  relevant, instead send method.

- Issue #10811: Fix recursive usage of cursors. Instead of crashing,
  raise a ProgrammingError now.

- Issue #10881: Fix test_site failure with OS X framework builds.

- Issue #964437: Make IDLE help window non-modal.
  Patch by Guilherme Polo and Roger Serwy.

- Issue #13734: Add os.fwalk(), a directory walking function yielding file
  descriptors.

- Issue #2945: Make the distutils upload command aware of bdist_rpm products.

- Issue #13712: pysetup create should not convert package_data to extra_files.

- Issue #11805: package_data in setup.cfg should allow more than one value.

- Issue #13933: IDLE auto-complete did not work with some imported
  module, like hashlib.  (Patch by Roger Serwy)

- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared.

- Issue #13676: Handle strings with embedded zeros correctly in sqlite3.

- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell.
  Original patches by Marco Scataglini and Roger Serwy.

- Issue #8828: Add new function os.replace(), for cross-platform renaming
  with overwriting.

- Issue #13848: open() and the FileIO constructor now check for NUL
  characters in the file name.  Patch by Hynek Schlawack.

- Issue #13806: The size check in audioop decompression functions was too
  strict and could reject valid compressed data.  Patch by Oleg Plakhotnyuk.

- Issue #13812: When a multiprocessing Process child raises an exception,
  flush stderr after printing the exception traceback.

- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
  IV attack countermeasure.

- Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead
  of ValueError on failure. time.ctime() and time.asctime() now raises an
  OSError if localtime() failed. time.clock() now raises a RuntimeError if the
  processor time used is not available or its value cannot be represented

- Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time
  minor versions not matching.

- Issue #12804: Fix test_socket and test_urllib2net failures when running tests
  on a system without internet access.

- Issue #13772: In os.symlink() under Windows, do not try to guess the link
  target's type (file or directory).  The detection was buggy and made the
  call non-atomic (therefore prone to race conditions).

- Issue #6631: Disallow relative file paths in urllib urlopen methods.

- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
  registry.

- Issue #13781: Fix GzipFile bug that caused an exception to be raised when
  opening for writing using a fileobj returned by os.fdopen().

- Issue #13803: Under Solaris, distutils doesn't include bitness
  in the directory name.

- Issue #10278: Add time.wallclock() function, monotonic clock.

- Issue #13809: Fix regression where bz2 module wouldn't work when threads are
  disabled. Original patch by Amaury Forgeot d'Arc.

- Issue #13589: Fix some serialization primitives in the aifc module.
  Patch by Oleg Plakhotnyuk.

- Issue #13642: Unquote before b64encoding user:password during Basic
  Authentication. Patch contributed by Joonas Kuorilehto.

- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow
  tests.

- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor.
  The hang would occur when retrieving the result of a scheduled future after
  the executor had been shut down.

- Issue #13502: threading: Fix a race condition in Event.wait() that made it
  return False when the event was set and cleared right after.

- Issue #9993: When the source and destination are on different filesystems,
  and the source is a symlink, shutil.move() now recreates a symlink on the
  destination instead of copying the file contents.  Patch by Jonathan Niehof
  and Hynek Schlawack.

- Issue #12926: Fix a bug in tarfile's link extraction.

- Issue #13696: Fix the 302 Relative URL Redirection problem.

- Issue #13636: Weak ciphers are now disabled by default in the ssl module
  (except when SSLv2 is explicitly asked for).

- Issue #12715: Add an optional symlinks argument to shutil functions
  (copyfile, copymode, copystat, copy, copy2).  When that parameter is
  true, symlinks aren't dereferenced and the operation instead acts on the
  symlink itself (or creates one, if relevant).  Patch by Hynek Schlawack.

- Add a flags parameter to select.epoll.

- Issue #12798: Updated the mimetypes documentation.

- Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the
  SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option.

- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails.

- Issue #13620: Support for Chrome browser in webbrowser.  Patch contributed
  by Arnaud Calmettes.

- Issue #11829: Fix code execution holes in inspect.getattr_static for
  metaclasses with metaclasses. Patch by Andreas Stührk.

- Issue #12708: Add starmap() and starmap_async() methods (similar to
  itertools.starmap()) to multiprocessing.Pool.  Patch by Hynek Schlawack.

- Issue #1785: Fix inspect and pydoc with misbehaving descriptors.

- Issue #13637: "a2b" functions in the binascii module now accept ASCII-only
  unicode strings.

- Issue #13634: Add support for querying and disabling SSL compression.

- Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman
  key exchange, through the SSLContext.set_ecdh_curve() method and the
  ssl.OP_SINGLE_ECDH_USE option.

- Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
  choose the cipher based on their own preferences, rather than on the
  client's.

- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
  Stührk.

- Issue #7502: Fix equality comparison for DocTestCase instances.  Patch by
  Cédric Krier.

- Issue #11870: threading: Properly reinitialize threads internal locks and
  condition variables to avoid deadlocks in child processes.

- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
  redirection or an error.

- Issue #13560: os.strerror() now uses the current locale encoding instead of
  UTF-8.

- Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize()
  and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to
  the current locale encoding.

- Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem
  encoding and the surrogateescape error handler, rather than UTF-8.  Patch
  by David Watson.

- Issue #10350: Read and save errno before calling a function which might
  overwrite it.  Original patch by Hallvard B Furuseth.

- Issue #11610: Introduce a more general way to declare abstract properties.

- Issue #13591: A bug in importlib has been fixed that caused import_module
  to load a module twice.

- Issue #4625: If IDLE cannot write to its recent file or breakpoint files,
  display a message popup and continue rather than crash.  Original patch by
  Roger Serwy.

- Issue #13449 sched.scheduler.run() method has a new "blocking" parameter which
  when set to False makes run() execute the scheduled events due to expire
  soonest (if any) and then return.  Patch by Giampaolo Rodolà.

- Issue #8684 sched.scheduler class can be safely used in multi-threaded
  environments.  Patch by Josiah Carlson and Giampaolo Rodolà.

- Alias resource.error to OSError ala PEP 3151.

- Issue #5689: Add support for lzma compression to the tarfile module.

- Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's
  DeprecationWarning.  It covers 'cgi.escape', 'importlib.abc.PyLoader',
  'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath',
  and private attributes of 'smtpd.SMTPChannel'.

- Issue #5905, #13560: time.strftime() is now using the current locale
  encoding, instead of UTF-8, if the wcsftime() function is not available.

- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..".
  Patch by Tal Einat.

- Issue #13464: Add a readinto() method to http.client.HTTPResponse.  Patch
  by Jon Kuhn.

- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
  other than 900k.

- Issue #13439: Fix many errors in turtle docstrings.

- Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm.
  Thanks to Per Øyvind Karlsen for the initial implementation.

- Issue #13487: Make inspect.getmodule robust against changes done to
  sys.modules while it is iterating over it.

- Issue #12618: Fix a bug that prevented py_compile from creating byte
  compiled files in the current directory.  Initial patch by Sjoerd de Vries.

- Issue #13444: When stdout has been closed explicitly, we should not attempt
  to flush it at shutdown and print an error.

- Issue #12567: The curses module uses Unicode functions for Unicode arguments
  when it is linked to the ncurses library. It encodes also Unicode strings to
  the locale encoding instead of UTF-8.

- Issue #12856: Ensure child processes do not inherit the parent's random
  seed for filename generation in the tempfile module.  Patch by Brian
  Harring.

- Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size
  parameter, as other file-like objects.  Patch by Ryan Kelly.

- Issue #13458: Fix a memory leak in the ssl module when decoding a
  certificate with a subjectAltName.  Patch by Robert Xiao.

- Issue #13415: os.unsetenv() doesn't ignore errors anymore.

- Issue #13245: sched.scheduler class constructor's timefunc and
  delayfunct parameters are now optional.
  scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter.
  Patch contributed by Chris Clark.

- Issue #12328: Under Windows, refactor handling of Ctrl-C events and
  make _multiprocessing.win32.WaitForMultipleObjects interruptible when
  the wait_flag parameter is false.  Patch by sbt.

- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
  raised when the wrapped raw file is non-blocking and the write would block.
  Previous code assumed that the raw write() would raise BlockingIOError, but
  RawIOBase.write() is defined to returned None when the call would block.
  Patch by sbt.

- Issue #13358: HTMLParser now calls handle_data only once for each CDATA.

- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text
  node when it is the only child of an element.  Initial patch by Dan
  Kenigsberg.

- Issue #13374: The Windows bytes API has been deprecated in the os module. Use
  Unicode filenames instead of bytes filenames to not depend on the ANSI code
  page anymore and to support any filename.

- Issue #13297: Use bytes type to send and receive binary data through XMLRPC.

- Issue #6397: Support "/dev/poll" polling objects in select module,
  under Solaris & derivatives.

- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
  handles non-valid attributes, including adjacent and unquoted attributes.

- Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest
  under Windows.

- Issue #13384: Remove unnecessary __future__ import in Lib/random.py

- Issue #13149: Speed up append-only StringIO objects.

- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
  when called with a timeout.  Patch by Arnaud Ysmal.

- Issue #13254: Fix Maildir initialization so that maildir contents
  are read correctly.

- Issue #3067: locale.setlocale() now raises TypeError if the second
  argument is an invalid iterable. Its documentation and docstring
  were also updated. Initial patch by Jyrki Pulliainen.

- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn.

- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon.
  Thanks to Robert Xiao.

- Byte compilation in packaging is now isolated from the calling Python -B or
  -O options, instead of being disallowed under -B or buggy under -O.

- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte
  string, instead of a Unicode string.

- Issue #13295: http.server now produces valid HTML 4.01 strict.

- Issue #2892: preserve iterparse events in case of SyntaxError.

- Issue #13287: urllib.request and urllib.error now contains an __all__
  attribute to expose only relevant classes and functions.  Patch by Florent
  Xicluna.

- Issue #670664: Fix HTMLParser to correctly handle the content of
  ``<script>...</script>`` and ``<style>...</style>``.

- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even
  when reporthook is None. Patch by Jyrki Pulliainen.

- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
  (Patch by Roger Serwy)

- Fix the xmlrpc.client user agent to return something similar to
  urllib.request user agent: "Python-xmlrpc/3.3".

- Issue #13293: Better error message when trying to marshal bytes using
  xmlrpc.client.

- Issue #13291: NameError in xmlrpc package.

- Issue #13258: Use callable() built-in in the standard library.

- Issue #13273: fix a bug that prevented HTMLParser to properly detect some
  tags when strict=False.

- Issue #11183: Add finer-grained exceptions to the ssl module, so that
  you don't have to inspect the exception's attributes in the common case.

- Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8).

- Issue #13226: Add RTLD_xxx constants to the os module. These constants can be
  used with sys.setdlopenflags().

- Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to
  the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a
  monotonic clock

- Issue #10332: multiprocessing: fix a race condition when a Pool is closed
  before all tasks have completed.

- Issue #13255: wrong docstrings in array module.

- Issue #8540: Remove deprecated Context._clamp attribute in Decimal module.

- Issue #13235: Added PendingDeprecationWarning to warn() method and function.

- Issue #9168: now smtpd is able to bind privileged port.

- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and
  semicolons together. Patch by Ben Darnell and Petri Lehtinen.

- Issue #13227: functools.lru_cache() now has a option to distinguish
  calls with different argument types.

- Issue #6090: zipfile raises a ValueError when a document with a timestamp
  earlier than 1980 is provided. Patch contributed by Petri Lehtinen.

- Issue #13150: sysconfig no longer parses the Makefile and config.h files
  when imported, instead doing it at build time.  This makes importing
  sysconfig faster and reduces Python startup time by 20%.

- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
  in order to display the prompt correctly.

- Issue #12454: The mailbox module is now using ASCII, instead of the locale
  encoding, to read and write MH mailboxes (.mh_sequences files).

- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
  now available on Windows.

- issue #1673007: urllib2  to support HEAD request via new method argument.
  Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti.

- Issue #12386: packaging does not fail anymore when writing the RESOURCES
  file.

- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number
  fields in tarfile.

- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding,
  instead of the locale encoding.

- Issue #10653: On Windows, use strftime() instead of wcsftime() because
  wcsftime() doesn't format time zone correctly.

- Issue #13150: The tokenize module doesn't compile large regular expressions
  at startup anymore.

- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was
  configured with different prefix and exec-prefix.

- Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in
  PEP 3147-compliant __pycache__ directories.

- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
  contents cannot be read.

- Issue #3163: The struct module gets new format characters 'n' and 'N'
  supporting C integer types ``ssize_t`` and ``size_t``, respectively.

- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
  Reported and diagnosed by Thomas Kluyver.

- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation
  if the underlying raw stream is unseekable, even if the seek could be
  satisfied using the internal buffer.  Patch by John O'Connor.

- Issue #7689: Allow pickling of dynamically created classes when their
  metaclass is registered with copyreg.  Patch by Nicolas M. Thiéry and Craig
  Citro.

- Issue #4147: minidom's toprettyxml no longer adds whitespace to text nodes.

- Issue #13034: When decoding some SSL certificates, the subjectAltName
  extension could be unreported.

- Issue #9871: Prevent IDLE 3 crash when given byte stings
  with invalid hex escape sequences, like b'\x0'.
  (Original patch by Claudiu Popa.)

- Issue #12306: Expose the runtime version of the zlib C library as a constant,
  ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff.

- Issue #12959: Add collections.ChainMap to collections.__all__.

- Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will
  now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or
  Download-URL field is present.

- Issue #12567: Add curses.unget_wch() function. Push a character so the next
  get_wch() will return it.

- Issue #9561: distutils and packaging now writes egg-info files using UTF-8,
  instead of the locale encoding.

- Issue #8286: The distutils command sdist will print a warning message instead
  of crashing when an invalid path is given in the manifest template.

- Issue #12841: tarfile unnecessarily checked the existence of numerical user
  and group ids on extraction. If one of them did not exist the respective id
  of the current user (i.e. root) was used for the file and ownership
  information was lost.

- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
  more than 128 entities.  Patch by Peter Otten.

- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.

- Issue #12636: IDLE reads the coding cookie when executing a Python script.

- Issue #12494: On error, call(), check_call(), check_output() and
  getstatusoutput() functions of the subprocess module now kill the process,
  read its status (to avoid zombis) and close pipes.

- Issue #12720: Expose low-level Linux extended file attribute functions in os.

- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
  now respect a --skip-build option given to bdist.  The packaging commands
  were fixed too.

- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in
  the C pickle implementation.

- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
  (more than 2**31 items).  Instead, in most cases, an OverflowError is raised.

- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
  greater than FD_SETSIZE.

- Issue #12839: Fix crash in zlib module due to version mismatch.
  Fix by Richard M. Tew.

- Issue #9923: The mailcap module now correctly uses the platform path
  separator for the MAILCAP environment variable on non-POSIX platforms.

- Issue #12835: Follow up to #6560 that unconditionally prevents use of the
  unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David
  Watson.

- Issue #12803: SSLContext.load_cert_chain() now accepts a password argument
  to be used if the private key is encrypted.  Patch by Adam Simpkins.

- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing
  Pipe.

- Issue #12811: tabnanny.check() now promptly closes checked files. Patch by
  Anthony Briggs.

- Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module
  when provided by the underlying platform, supporting processing of
  ancillary data in pure Python code. Patch by David Watson and Heiko Wundram.

- Issue #12326: On Linux, sys.platform doesn't contain the major version
  anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending
  on the Linux version used to build Python.

- Issue #12213: Fix a buffering bug with interleaved reads and writes that
  could appear on BufferedRandom streams.

- Issue #12778: Reduce memory consumption when JSON-encoding a large
  container of many small objects.

- Issue #12650: Fix a race condition where a subprocess.Popen could leak
  resources (FD/zombie) when killed at the wrong time.

- Issue #12744: Fix inefficient representation of integers between 2**31 and
  2**63 on systems with a 64-bit C "long".

- Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to
  detect truncated input streams.

- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when
  the file cannot be opened.

- Issue #12687: Fix a possible buffering bug when unpickling text mode
  (protocol 0, mostly) pickles.

- Issue #10087: Fix the html output format of the calendar module.

- Issue #12540: Prevent zombie IDLE processes on Windows due to changes
  in os.kill().

- Add support for unary plus and unary minus to collections.Counter().
  Issue #13121: Also add support for inplace math operators.

- Issue #12683: urlparse updated to include svn as schemes that uses relative
  paths. (svn from 1.5 onwards support relative path).

- Issue #12655: Expose functions from sched.h in the os module: sched_yield(),
  sched_setscheduler(), sched_getscheduler(), sched_setparam(),
  sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(),
  sched_getaffinity(), sched_setaffinity().

- Add ThreadError to threading.__all__.

- Issues #11104, #8688: Fix the behavior of distutils' sdist command with
  manually-maintained MANIFEST files.

- Issue #11281: smtplib.STMP gets source_address parameter, which adds the
  ability to bind to specific source address on a machine with multiple
  interfaces. Patch by Paulo Scardine.

- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow
  symlinks: fix it. Patch by Petri Lehtinen.

- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod')
  in Python code) now finds the doc of the method.

- Issue #10968: Remove indirection in threading.  The public names (Thread,
  Condition, etc.) used to be factory functions returning instances of hidden
  classes (_Thread, _Condition, etc.), because (if Guido recalls correctly) this
  code pre-dates the ability to subclass extension types.  It is now possible to
  inherit from Thread and other classes, without having to import the private
  underscored names like multiprocessing did.

- Issue #9723: Add shlex.quote functions, to escape filenames and command
  lines.

- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime.

- Issue #12514: Use try/finally to assure the timeit module restores garbage
  collections when it is done.

- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is
  given as a low fd, it gets overwritten.

- Issue #12590: IDLE editor window now always displays the first line
  when opening a long file.  With Tk 8.5, the first line was hidden.

- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates)
  Connection:close header.

- Issue #12102: Document that buffered files must be flushed before being used
  with mmap. Patch by Steffen Daode Nurpmeso.

- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.

- Issue #1813: Fix codec lookup under Turkish locales.

- Issue #12591: Improve support of "universal newlines" in the subprocess
  module: the piped streams can now be properly read from or written to.

- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without
  a read1() method), and add a *write_through* parameter to mandate
  unbuffered writes.

- Issue #10883: Fix socket leaks in urllib.request when using FTP.

- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).

- Issue #12372: POSIX semaphores are broken on AIX: don't use them.

- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as
  to get channel binding data for the current SSL session (only the
  "tls-unique" channel binding is implemented).  This allows the implementation
  of certain authentication mechanisms such as SCRAM-SHA-1-PLUS.  Patch by
  Jacek Konieczny.

- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime
  functions, allowing for round tripping of RFC2822 format dates.

- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
  directory, so that "import DLFCN" and other similar imports work on
  Linux 3.0.

- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
  commands; they aren't required and in fact postfix doesn't support that form.

- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
  checking sys.version_info or sys._mercurial.

- Silence spurious "broken pipe" tracebacks when shutting down a
  ProcessPoolExecutor.

- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
  by joining all queues and processes when shutdown() is called.

- Issue #11603: Fix a crash when __str__ is rebound as __repr__.  Patch by
  Andreas Stührk.

- Issue #11321: Fix a crash with multiple imports of the _pickle module when
  embedding Python.  Patch by Andreas Stührk.

- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo
  Serna.

- Add cgi.closelog() function to close the log file.

- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.

- Issue #4376: ctypes now supports nested structures in a endian different than
  the parent structure. Patch by Vlad Riscutia.

- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
  TextIOWrapper to a huge value, not TypeError.

- Issue #12504: Close file handles in a timely manner in packaging.database.
  This fixes a bug with the remove (uninstall) feature on Windows.

- Issues #12169 and #10510: Factor out code used by various packaging commands
  to make HTTP POST requests, and make sure it uses CRLF.

- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only
  ignore the first byte of an invalid byte sequence. For example,
  b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'.

- Issue #12459: time.sleep() now raises a ValueError if the sleep length is
  negative, instead of an infinite sleep on Windows or raising an IOError on
  Linux for example, to have the same behaviour on all platforms.

- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
  Python scripts using a encoding different than UTF-8 (read the coding cookie
  of the script).

- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
  if the process has only one pipe.

- Issue #12467: warnings: fix a race condition if a warning is emitted at
  shutdown, if globals()['__file__'] is None.

- Issue #12451: pydoc: importfile() now opens the Python script in binary mode,
  instead of text mode using the locale encoding, to avoid encoding issues.

- Issue #12451: runpy: run_path() now opens the Python script in binary mode,
  instead of text mode using the locale encoding, to support other encodings
  than UTF-8 (scripts using the coding cookie).

- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
  of the text mode (using the locale encoding) to avoid encoding issues.

- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
  conformance to the RFCs:  correctly handle Sender and Resent- headers.

- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
  the garbage collector while the Heap lock is held.

- Issue #12462: time.sleep() now calls immediatly the (Python) signal handler
  if it is interrupted by a signal, instead of having to wait until the next
  instruction.

- Issue #12442: new shutil.disk_usage function, providing total, used and free
  disk space statistics.

- Issue #12451: The XInclude default loader of xml.etree now decodes files from
  UTF-8 instead of the locale encoding if the encoding is not specified. It now
  also opens XML files for the parser in binary mode instead of the text mode
  to avoid encoding issues.

- Issue #12451: doctest.debug_script() doesn't create a temporary file
  anymore to avoid encoding issues.

- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available,
  to read the Python script from the right encoding.

- Issue #12451: distutils now opens the setup script in binary mode to read the
  encoding cookie, instead of opening it in UTF-8.

- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to
  check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
  interpreter process.  This could cause failures in non-Distutils subprocesses
  and was unreliable since tests or user programs could modify the interpreter
  environment after Distutils set it.  Instead, have Distutils set the the
  deployment target only in the environment of each build subprocess.  It is
  still possible to globally override the default by setting
  MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
  greater or equal to the default value, the value with which the interpreter
  was built.  Also, implement the same handling in packaging.

- Issue #12422: In the copy module, don't store objects that are their own copy
  in the memo dict.

- Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module.

- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira
  Kitada.

- Issue #1874: email now detects and reports as a defect the presence of
  any CTE other than 7bit, 8bit, or binary on a multipart.

- Issue #12383: Fix subprocess module with env={}: don't copy the environment
  variables, start with an empty environment.

- Issue #11637: Fix support for importing packaging setup hooks from the
  project directory.

- Issue #6771: Moved the curses.wrapper function from the single-function
  wrapper module into __init__, eliminating the module.  Since __init__ was
  already importing the function to curses.wrapper, there is no API change.

- Issue #11584: email.header.decode_header no longer fails if the header
  passed to it is a Header object, and Header/make_header no longer fail
  if given binary unknown-8bit input.

- Issue #11700: mailbox proxy object close methods can now be called multiple
  times without error.

- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.

- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
  connection if its getresponse() method fails with a socket error. Patch
  written by Ezio Melotti.

- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
  Original patch by Erik Bray.

- Issue #9284: Allow inspect.findsource() to find the source of doctest
  functions.

- Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a
  compatibility helper for the distutils-packaging transition.  Original patch
  by Erik Bray.

- Issue #12287: In ossaudiodev, check that the device isn't closed in several
  methods.

- Issue #12009: Fixed regression in netrc file comment handling.

- Issue #12246: Warn and fail when trying to install a third-party project from
  an uninstalled Python (built in a source checkout).  Original patch by
  Tshepang Lekhonkhobe.

- Issue #10694: zipfile now ignores garbage at the end of a zipfile.

- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA.

- Issue #10424: Argparse now includes the names of the missing required
  arguments in the missing arguments error message.

- Issue #12168: SysLogHandler now allows NUL termination to be controlled using
  a new 'append_nul' attribute on the handler.

- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes
  instead of os.stat.

- Issue #12021: Make mmap's read() method argument optional. Patch by Petri
  Lehtinen.

- Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed
  children and raises BrokenProcessPool in such a situation.  Previously it
  would reliably freeze/deadlock.

- Issue #12040: Expose a new attribute ``sentinel`` on instances of
  ``multiprocessing.Process``.  Also, fix Process.join() to not use polling
  anymore, when given a timeout.

- Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the
  smtplib module.  Patch by Catalin Iacob.

- Issue #12080: Fix a Decimal.power() case that took an unreasonably long time
  to compute.

- Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile,
  pydoc, tkinter, and xml.parsers.expat. This were useless version constants
  left over from the Mercurial transition

- Named tuples now work correctly with vars().

- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the
  constructor has failed, e.g. because of an undeclared keyword argument. Patch
  written by Oleg Oshmyan.

- Issue #12028: Make threading._get_ident() public, rename it to
  threading.get_ident() and document it. This function was already used using
  _thread.get_ident().

- Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls
  encreset() instead of decreset().

- Issue #12218: Removed wsgiref.egg-info.

- Issue #12196: Add pipe2() to the os module.

- Issue #985064: Make plistlib more resilient to faulty input plists.
  Patch by Mher Movsisyan.

- Issue #1625: BZ2File and bz2.decompress() now support multi-stream files.
  Initial patch by Nir Aides.

- Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available.

- Issue #12175: FileIO.readall() now only reads the file position and size
  once.

- Issue #12175: RawIOBase.readall() now returns None if read() returns None.

- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
  if the file is closed.

- Issue #11109: New service_action method for BaseServer, used by ForkingMixin
  class for cleanup. Initial Patch by Justin Wark.

- Issue #12045: Avoid duplicate execution of command in
  ctypes.util._get_soname().  Patch by Sijin Joseph.

- Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module,
  pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web
  server.

- Issue #1441530: In imaplib, read the data in one chunk to speed up large
  reads and simplify code.

- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
  correctly references to "bogus variable" (e.g. "prefix=$/opt/python").

- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
  their encode() method anymore, but continue to call the reset() method if the
  final argument is True.

- Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl
  module.

- Issue #6501: os.device_encoding() returns None on Windows if the application
  has no console.

- Issue #12105: Add O_CLOEXEC to the os module.

- Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j))
  now raises TypeError (reflecting the invalid type of the 3rd argument) rather
  than Decimal.InvalidOperation.

- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
  to be able to unload the module.

- Add the packaging module, an improved fork of distutils (also known as
  distutils2).

- Issue #12065: connect_ex() on an SSL socket now returns the original errno
  when the socket's timeout expires (it used to return None).

- Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support
  passing a ``context`` argument pointing to an ssl.SSLContext instance.
  Patch by Kasun Herath.

- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX
  with Tk 8.5.

- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
  is set in shell.

- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and
  their incremental counterparts now raise OverflowError if given an input
  larger than 4GB, instead of silently truncating the input and returning
  an incorrect result.

- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
  attribute when called without a max_length argument.

- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence
  on a file opened in read+write mode (namely: reading, seeking a bit forward,
  writing, then seeking before the previous write but still within buffered
  data, and writing again).

- Issue #9971: Write an optimized implementation of BufferedReader.readinto().
  Patch by John O'Connor.

- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
  With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
  IDLE to exit.  Converted to valid Unicode null in PythonCmd().

- Issue #11799: urllib.request Authentication Handlers will raise a ValueError
  when presented with an unsupported Authentication Scheme. Patch contributed
  by Yuval Greenfield.

- Issue #10419, #6011: build_scripts command of distutils handles correctly
  non-ASCII path (path to the Python executable). Open and write the script in
  binary mode, but ensure that the shebang is decodable from UTF-8 and from the
  encoding of the script.

- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in
  order to accept exactly one connection.  Patch by Daniel Evers.

- Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError,
  instead of a RuntimeError: OSError has an errno attribute.

- Issue #3709: a flush_headers method to BaseHTTPRequestHandler which manages
  the sending of headers to output stream and flushing the internal headers
  buffer. Patch contribution by Andrew Schaaf

- Issue #11743: Rewrite multiprocessing connection classes in pure Python.

- Issue #11164: Stop trying to use _xmlplus in the xml module.

- Issue #11888: Add log2 function to math module. Patch written by Mark
  Dickinson.

- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional.

- Issue #8407: The signal handler writes the signal number as a single byte
  instead of a nul byte into the wakeup file descriptor. So it is possible to
  wait more than one signal and know which signals were raised.

- Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the
  signal module.

- Issue #11927: SMTP_SSL now uses port 465 by default as documented.  Patch
  by Kasun Herath.

- Issue #12002: ftplib's abort() method raises TypeError.

- Issue #11916: Add a number of MacOSX specific definitions to the errno module.
  Patch by Pierre Carrier.

- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to
  detect mtime changes by comparing to the system clock instead of to the
  previous value of the mtime.

- Issue #11072: added MLSD command (RFC-3659) support to ftplib.

- Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext
  parameter to control parameters of the secure channel.  Patch by Sijin
  Joseph.

- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same
  file on Windows XP. As noticed in issue #10684.

- Issue #12000: When a SSL certificate has a subjectAltName without any
  dNSName entry, ssl.match_hostname() should use the subject's commonName.
  Patch by Nicolas Bareil.

- Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and
  assertWarnsRegex now accept a keyword argument 'msg' when used as context
  managers.  Initial patch by Winston Ewert.

- Issue #10684: shutil.move used to delete a folder on case insensitive
  filesystems when the source and destination name where the same except
  for the case.

- Issue #11647: objects created using contextlib.contextmanager now support
  more than one call to the function when used as a decorator. Initial patch
  by Ysj Ray.

- Issue #11930: Removed deprecated time.accept2dyear variable.
  Removed year >= 1000 restriction from datetime.strftime.

- logging: don't define QueueListener if Python has no thread support.

- functools.cmp_to_key() now works with collections.Hashable().

- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
  around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.

- Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the
  signal mask of the calling thread.

- Issue #11858: configparser.ExtendedInterpolation expected lower-case section
  names.

- Issue #11324: ConfigParser(interpolation=None) now works correctly.

- Issue #11811: ssl.get_server_certificate() is now IPv6-compatible.  Patch
  by Charles-François Natali.

- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the
  strings are too long.

- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal.

- Issue #11856: Speed up parsing of JSON numbers.

- Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the
  lock was not acquired.

- Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor
  of 5 to 10.  Initial patch by Jonas H.

- Issue #11382: Trivial system calls, such as dup() or pipe(), needn't
  release the GIL.  Patch by Charles-François Natali.

- Issue #11223: Add threading._info() function providing informations about
  the thread implementation.

- Issue #11731: simplify/enhance email parser/generator API by introducing
  policy objects.

- Issue #11768: The signal handler of the signal module only calls
  Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
  parallel calls. PyErr_SetInterrupt() writes also into the wake up file.

- Issue #11492: fix several issues with header folding in the email package.

- Issue #11852: Add missing imports and update tests.

- Issue #11875: collections.OrderedDict's __reduce__ was temporarily
  mutating the object instead of just working on a copy.

- Issue #11467: Fix urlparse behavior when handling urls which contains scheme
  specific part only digits. Patch by Santoso Wijaya.

- collections.Counter().copy() now works correctly for subclasses.

- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows.
  Patch by Santoso Wijaya.

- Issue #11684: complete email.parser bytes API by adding BytesHeaderParser.

- The bz2 module now handles 4GiB+ input buffers correctly.

- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when
  _json is not available.

- Issue #11830: Remove unnecessary introspection code in the decimal module.

- Issue #11703: urllib2.geturl() does not return correct url when the original
  url contains #fragment.

- Issue #10019: Fixed regression in json module where an indent of 0 stopped
  adding newlines and acted instead like 'None'.

- Issue #11186: pydoc ignores a module if its name contains a surrogate
  character in the index of modules.

- Issue #11815: Use a light-weight SimpleQueue for the result queue in
  concurrent.futures.ProcessPoolExecutor.

- Issue #5162: Treat services like frozen executables to allow child spawning
  from multiprocessing.forking on Windows.

- logging.basicConfig now supports an optional 'handlers' argument taking an
  iterable of handlers to be added to the root logger. Additional parameter
  checks were also added to basicConfig.

- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().

- Issue #11747: Fix range formatting in difflib.context_diff() and
  difflib.unified_diff().

- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
  worker processes: new processes would be spawned while the pool is being
  shut down.  Patch by Charles-François Natali.

- Issue #2650: re.escape() no longer escapes the '_'.

- Issue #11757: select.select() now raises ValueError when a negative timeout
  is passed (previously, a select.error with EINVAL would be raised).  Patch
  by Charles-François Natali.

- Issue #7311: fix html.parser to accept non-ASCII attribute values.

- Issue #11605: email.parser.BytesFeedParser was incorrectly converting
  multipart subparts with an 8-bit CTE into unicode instead of preserving the
  bytes.

- Issue #1690608: email.util.formataddr is now RFC 2047 aware:  it now has a
  charset parameter that defaults to utf-8 and is used as the charset for RFC
  2047 encoding when the realname contains non-ASCII characters.

- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE.

- Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile
  to be wrapped in a TextIOWrapper.  Patch by Nadeem Vawda.

- Issue #11707: Added a fast C version of functools.cmp_to_key().
  Patch by Filip Gruszczyński.

- Issue #11688: Add sqlite3.Connection.set_trace_callback().  Patch by
  Torsten Landschoff.

- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
  private keys.

- Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept
  file-like objects using a new ``fileobj`` constructor argument.  Patch by
  Nadeem Vawda.

- unittest.TestCase.assertSameElements has been removed.

- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
  called yet: detect bootstrap (startup) issues earlier.

- Issue #11393: Add the new faulthandler module.

- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows.

- Removed the 'strict' argument to email.parser.Parser, which has been
  deprecated since Python 2.4.

- Issue #11256: Fix inspect.getcallargs on functions that take only keyword
  arguments.

- Issue #11696: Fix ID generation in msilib.

- itertools.accumulate now supports an optional *func* argument for
  a user-supplied binary function.

- Issue #11692: Remove unnecessary demo functions in subprocess module.

- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
  trying to pack a negative (in-range) integer.

- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
  are now zeroed on creation.  This matches the behaviour specified by the
  documentation.

- Issue #7639: Fix short file name generation in bdist_msi

- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459.
  Patch by Ben Hayden.

- Issue #11635: Don't use polling in worker threads and processes launched by
  concurrent.futures.

- Issue #6811: Allow importlib to change a code object's co_filename attribute
  to match the path to where the source code currently is, not where the code
  object originally came from.

- Issue #8754: Have importlib use the repr of a module name in error messages.

- Issue #11591: Prevent "import site" from modifying sys.path when python
  was started with -S.

- collections.namedtuple() now adds a _source attribute to the generated
  class.  This make the source more accessible than the outdated
  "verbose" option which prints to stdout but doesn't make the source
  string available.

- Issue #11371: Mark getopt error messages as localizable.  Patch by Filip
  Gruszczyński.

- Issue #11333: Add __slots__ to collections ABCs.

- Issue #11628: cmp_to_key generated class should use __slots__.

- Issue #11666: let help() display named tuple attributes and methods
  that start with a leading underscore.

- Issue #11662: Make urllib and urllib2 ignore redirections if the
  scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).

- Issue #5537: Fix time2isoz() and time2netscape() functions of
  httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.

- Issue #4391: Use proper gettext plural forms in optparse.

- Issue #11127: Raise a TypeError when trying to pickle a socket object.

- Issue #11563: Connection:close header is sent by requests using URLOpener
  class which helps in closing of sockets after connection is over. Patch
  contributions by Jeff McNeil and Nadeem Vawda.

- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates
  unbuffered pipes, such that select() works properly on them.

- Issue #5421: Fix misleading error message when one of socket.sendto()'s
  arguments has the wrong type.  Patch by Nikita Vetoshkin.

- Issue #10812: Add some extra posix functions to the os module.

- Issue #10979: unittest stdout buffering now works with class and module
  setup and teardown.

- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage

- Issue #11243: fix the parameter querying methods of Message to work if
  the headers contain un-encoded non-ASCII data.

- Issue #11401: fix handling of headers with no value; this fixes a regression
  relative to Python2 and the result is now the same as it was in Python2.

- Issue #9298: base64 bodies weren't being folded to line lengths less than 78,
  which was a regression relative to Python2.  Unlike Python2, the last line
  of the folded body now ends with a carriage return.

- Issue #11560: shutil.unpack_archive now correctly handles the format
  parameter. Patch by Evan Dandrea.

- Issue #5870: Add `subprocess.DEVNULL` constant.

- Issue #11133: fix two cases where inspect.getattr_static can trigger code
  execution. Patch by Andreas Stührk.

- Issue #11569: use absolute path to the sysctl command in multiprocessing to
  ensure that it will be found regardless of the shell PATH. This ensures
  that multiprocessing.cpu_count works on default installs of MacOSX.

- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is
  not installed. Instead, the zipfile.ZIP_STORED compression is used to create
  the ZipFile. Patch by Natalia B. Bidart.

- Issue #11289: `smtp.SMTP` class becomes a context manager so it can be used
  in a `with` statement.  Contributed by Giampaolo Rodola.

- Issue #11554: Fixed support for Japanese codecs; previously the body output
  encoding was not done if euc-jp or shift-jis was specified as the charset.

- Issue #11509: Significantly increase test coverage of fileinput.
  Patch by Denver Coneybeare at PyCon 2011 Sprints.

- Issue #11407: `TestCase.run` returns the result object used or created.
  Contributed by Janathan Hartley.

- Issue #11500: Fixed a bug in the os x proxy bypass code for fully qualified
  IP addresses in the proxy exception list.

- Issue #11491: dbm.error is no longer raised when dbm.open is called with
  the "n" as the flag argument and the file exists. The behavior matches
  the documentation and general logic.

- Issue #1162477: Postel Principle adjustment to email date parsing: handle the
  fact that some non-compliant MUAs use '.' instead of ':' in time specs.

- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus
  operations when the rounding mode is ROUND_FLOOR.

- Issue #9935: Speed up pickling of instances of user-defined classes.

- Issue #5622: Fix curses.wrapper to raise correct exception if curses
  initialization fails.

- Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when
  really necessary.  Patch by Charles-François Natali.

- Issue #11391: Writing to a mmap object created with
  ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a
  TypeError.  Patch by Charles-François Natali.

- Issue #9795: add context manager protocol support for nntplib.NNTP class.

- Issue #11306: mailbox in certain cases adapts to an inability to open
  certain files in read-write mode.  Previously it detected this by
  checking for EACCES, now it also checks for EROFS.

- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors
  on accept(), send() and recv().

- Issue #11377: Deprecate platform.popen() and reimplement it with os.popen().

- Issue #8513: On UNIX, subprocess supports bytes command string.

- Issue #10866: Add socket.sethostname().  Initial patch by Ross Lagerwall.

- Issue #11140: Lock.release() now raises a RuntimeError when attempting
  to release an unacquired lock, as claimed in the threading documentation.
  The _thread.error exception is now an alias of RuntimeError.  Patch by
  Filip Gruszczyński.  Patch for _dummy_thread by Aymeric Augustin.

- Issue #8594: ftplib now provides a source_address parameter to specify which
  (address, port) to bind to before connecting.

- Issue #11326: Add the missing connect_ex() implementation for SSL sockets,
  and make it work for non-blocking connects.

- Issue #11297: Add collections.ChainMap().

- Issue #10755: Add the posix.flistdir() function.  Patch by Ross Lagerwall.

- Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the
  posix module.  Patch by Ross Lagerwall.

- Issue #7322: Trying to read from a socket's file-like object after a timeout
  occurred now raises an error instead of silently losing data.

- Issue #11291: poplib.POP no longer suppresses errors on quit().

- Issue #11177: asyncore's create_socket() arguments can now be omitted.

- Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread
  and multiprocessing.Process constructors in order to override the
  default behaviour of inheriting the daemonic property from the current
  thread/process.

- Issue #10956: Buffered I/O classes retry reading or writing after a signal
  has arrived and the handler returned successfully.

- Issue #10784: New os.getpriority() and os.setpriority() functions.

- Issue #11114: Fix catastrophic performance of tell() on text files (up
  to 1000x faster in some cases).  It is still one to two order of magnitudes
  slower than binary tell().

- Issue #10882: Add os.sendfile function.

- Issue #10868: Allow usage of the register method of an ABC as a class
  decorator.

- Issue #11224: Fixed a regression in tarfile that affected the file-like
  objects returned by TarFile.extractfile() regarding performance, memory
  consumption and failures with the stream interface.

- Issue #10924: Adding salt and Modular Crypt Format to crypt library.
  Moved old C wrapper to _crypt, and added a Python wrapper with
  enhanced salt generation and simpler API for password generation.

- Issue #11074: Make 'tokenize' so it can be reloaded.

- Issue #11085: Moved collections abstract base classes into a separate
  module called collections.abc, following the pattern used by importlib.abc.
  For backwards compatibility, the names are imported into the collections
  module.

- Issue #4681: Allow mmap() to work on file sizes and offsets larger than
  4GB, even on 32-bit builds.  Initial patch by Ross Lagerwall, adapted for
  32-bit Windows.

- Issue #11169: compileall module uses repr() to format filenames and paths to
  escape surrogate characters and show spaces.

- Issue #11089: Fix performance issue limiting the use of ConfigParser()
  with large config files.

- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
  larger than 4GB.  Patch by Nadeem Vawda.

- Issue #11388: Added a clear() method to MutableSequence

- Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names
  for the names of optional and positional arguments in help messages.

- Issue #9348: Raise an early error if argparse nargs and metavar don't match.

- Issue #8982: Improve the documentation for the argparse Namespace object.

- Issue #9343: Document that argparse parent parsers must be configured before
  their children.

- Issue #9026: Fix order of argparse sub-commands in help messages.

- Issue #9347: Fix formatting for tuples in argparse type= error messages.

- Issue #12191: Added shutil.chown() to change user and/or group owner of a
  given path also specifying their names.

- Issue #13988: The _elementtree accelerator is used whenever available.
  Now xml.etree.cElementTree becomes a deprecated alias to ElementTree.

Build
-----

- Issue #6807: Run msisupport.mak earlier.

- Issue #10580: Minor grammar change in Windows installer.

- Issue #13326: Clean __pycache__ directories correctly on OpenBSD.

- PEP 393: the configure option --with-wide-unicode is removed.

- Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
  functions on OpenBSD (e.g. fdopendir).

- Issue #11863: Remove support for legacy systems deprecated in Python 3.2
  (following PEP 11).  These systems are systems using Mach C Threads,
  SunOS lightweight processes, GNU pth threads and IRIX threads.

- Issue #8746: Correct faulty configure checks so that os.chflags() and
  os.lchflags() are once again built on systems that support these
  functions (BSD and OS X).  Also add new stat file flags for OS X
  (UF_HIDDEN and UF_COMPRESSED).

- Issue #10645: Installing Python does no longer create a
  Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory.

- Do not accidentally include the directory containing sqlite.h twice when
  building sqlite3.

- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds,
  ensure "make install" creates symlinks in --prefix bin for the "-32"
  files in the framework bin directory like the installer does.

- Issue #11347: Use --no-as-needed when linking libpython3.so.

- Issue #11411: Fix 'make DESTDIR=' with a relative destination.

- Issue #11268: Prevent Mac OS X Installer failure if Documentation
  package had previously been installed.

- Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2.


IDLE
----

- Issue #11718: IDLE's open module dialog couldn't find the __init__.py
  file in a package.

Tools/Demos
-----------

- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
  Patch by Francisco Martín Brugué.

- Issue #13930: 2to3 is now able to write its converted output files to another
  directory tree as well as copying unchanged files and altering the file
  suffix.  See its new -o, -W and --add-suffix options.  This makes it more
  useful in many automated code translation workflows.

- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
  traceback if Python is optimized.

- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and
  add a smarter "py-bt" command printing a classic Python traceback.

- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.

- Issue #10639: reindent.py no longer converts newlines and will raise
  an error if attempting to convert a file with mixed newlines.
  "--newline" option added to specify new line character.

Extension Modules
-----------------

- Issue #13840: The error message produced by ctypes.create_string_buffer
  when given a Unicode string has been fixed.

- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by
  Vilmos Nebehaj.

- Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support.

- Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time
  buffer growth strategy instead of a quadratic-time one.

- Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by
  Matthias Fuchs, updated by Tiago Gonçalves.

- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle
  would be finalized after the reference to its underlying BufferedRWPair's
  writer got cleared by the GC.

- Issue #12881: ctypes: Fix segfault with large structure field names.

- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by
  Thomas Jarosch.

- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
  Thanks to Suman Saha for finding the bug and providing a patch.

- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that
  file descriptor was actually received.

- Issue #1172711: Add 'long long' support to the array module.
  Initial patch by Oren Tirosh and Hirokazu Yamamoto.

- Issue #12483: ctypes: Fix a crash when the destruction of a callback
  object triggers the garbage collector.

- Issue #12950: Fix passing file descriptors in multiprocessing, under
  OpenIndiana/Illumos.

- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not
  a string.

- Issue #11241: subclasses of ctypes.Array can now be subclassed.

- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to
  some functions like file.write().

- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper
  signature.  Without this, architectures where sizeof void* != sizeof int are
  broken.  Patch given by Hallvard B Furuseth.

- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
  objects using the C accelerations.

- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
  objects using the C accelerations.

- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
  to an instance of the class.

Tests
-----

- Issue #11689: Fix a variable scoping error in an sqlite3 test

- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.

- Issue #13725: Fix regrtest to recognize the documented -d flag.
  Patch by Erno Tukia.

- Issue #13304: Skip test case if user site-packages disabled (-s or
  PYTHONNOUSERSITE).  (Patch by Carl Meyer)

- Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch
  by Xavier de Gaye.

- Issue #13218: Fix test_ssl failures on Debian/Ubuntu.

- Re-enable lib2to3's test_parser.py tests, though with an expected failure
  (see issue 13125).

- Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore.

- Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi)

- Issue #11651: Improve the Makefile test targets to run more of the test suite
  more quickly. The --multiprocess option is now enabled by default, reducing
  the amount of time needed to run the tests. "make test" and "make quicktest"
  now include some resource-intensive tests, but no longer run the test suite
  twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides
  an easy platform-independent way to run test suite with sensible defaults.

- Issue #12331: The test suite for the packaging module can now run from an
  installed Python.

- Issue #12331: The test suite for lib2to3 can now run from an installed
  Python.

- Issue #12626: In regrtest, allow to filter tests using a glob filter
  with the ``-m`` (or ``--match``) option.  This works with all test cases
  using the unittest module.  This is useful with long test suites
  such as test_io or test_subprocess.

- Issue #12624: It is now possible to fail after the first failure when
  running in verbose mode (``-v`` or ``-W``), by using the ``--failfast``
  (or ``-G``) option to regrtest.  This is useful with long test suites
  such as test_io or test_subprocess.

- Issue #12587: Correct faulty test file and reference in test_tokenize.
  (Patch by Robert Xiao)

- Issue #12573: Add resource checks for dangling Thread and Process objects.

- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64'
  as the processor type on some Mac systems.

- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
  failure in name resolution.

- Issue #11812: Solve transient socket failure to connect to 'localhost'
  in test_telnetlib.py.

- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812.

- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
  an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
  Web site.

- Avoid failing in test_urllibnet.test_bad_address when some overzealous
  DNS service (e.g. OpenDNS) resolves a non-existent domain name.  The test
  is now skipped instead.

- Issue #12440: When testing whether some bits in SSLContext.options can be
  reset, check the version of the OpenSSL headers Python was compiled against,
  rather than the runtime version of the OpenSSL library.

- Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons.

- Issue #12497: Install test/data to prevent failures of the various codecmaps
  tests.

- Issue #12496: Install test/capath directory to prevent test_connect_capath
  testcase failure in test_ssl.

- Issue #12469: Run wakeup and pending signal tests in a subprocess to run the
  test in a fresh process with only one thread and to not change signal
  handling of the parent process.

- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run
  test_tk or test_ttk_guionly under a username that is not currently logged
  in to the console windowserver (as may be the case under buildbot or ssh).

- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows.

- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures
  the output and displays it on failure instead. regrtest -v doesn't print the
  error twice anymore if there is only one error.

- Issue #12141: Install copies of template C module file so that
  test_build_ext of test_distutils and test_command_build_ext of
  test_packaging are no longer silently skipped when
  run outside of a build directory.

- Issue #8746: Add additional tests for os.chflags() and os.lchflags().
  Patch by Garrett Cooper.

- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9
  2.8 +  on Mac OS X.  (Patch by Ronald Oussoren)

- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
  iso2022_kr).

- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch
  written by Charles-François Natali.

- Issue #11614: import __hello__ prints "Hello World!". Patch written by
  Andreas Stührk.

- Issue #5723: Improve json tests to be executed with and without accelerations.

- Issue #12041: Make test_wait3 more robust.

- Issue #11873: Change regex in test_compileall to fix occasional failures when
  when the randomly generated temporary path happened to match the regex.

- Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost".
  Patch written by Charles-Francois Natali.

- Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use
  pthread_sigmask() to ensure that the SIGALRM signal is received by the main
  thread.

- Issue #11811: Factor out detection of IPv6 support on the current host
  and make it available as ``test.support.IPV6_ENABLED``.  Patch by
  Charles-François Natali.

- Issue #10914: Add a minimal embedding test to test_capi.

- Issue #11223: Skip test_lock_acquire_interruption() and
  test_rlock_acquire_interruption() of test_threadsignals if a thread lock is
  implemented using a POSIX mutex and a POSIX condition variable. A POSIX
  condition variable cannot be interrupted by a signal (e.g. on Linux, the
  futex system call is restarted).

- Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition.

- Fix possible "file already exists" error when running the tests in parallel.

- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
  platforms. Patch by Nadeem Vawda.

- Issue #11727: Add a --timeout option to regrtest: if a test takes more than
  TIMEOUT seconds, dumps the traceback of all threads and exits.

- Issue #11653: fix -W with -j in regrtest.

- The email test suite now lives in the Lib/test/test_email package.  The test
  harness code has also been modernized to allow use of new unittest features.

- regrtest now discovers test packages as well as test modules.

- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov.

- New test_crashers added to exercise the scripts in the Lib/test/crashers
  directory and confirm they fail as expected

- Issue #11578: added test for the timeit module.  Patch by Michael Henry.

- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea.

- Issue #11505: improves test coverage of string.py, increases granularity of
  string.Formatter tests. Initial patch by Alicia Arlen.

- Issue #11548: Improve test coverage of the shutil module. Patch by
  Evan Dandrea.

- Issue #11554: Reactivated test_email_codecs.

- Issue #11505: improves test coverage of string.py. Patch by Alicia
  Arlen

- Issue #11490: test_subprocess:test_leaking_fds_on_error no longer gives a
  false positive if the last directory in the path is inaccessible.

- Issue #11223: Fix test_threadsignals to fail, not hang, when the
  non-semaphore implementation of locks is used under POSIX.

- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by
  Pierre Quentel.

- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
  Patch by Hirokazu Yamamoto.

- Issue #10512: Properly close sockets under test.test_cgi.

- Issue #10992: Make tests pass under coverage.

- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due
  to open door files.

- Issue #10990: Prevent tests from clobbering a set trace function.

C-API
-----

- Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic
  implementations for the getter and setter of a ``__dict__`` descriptor of C
  types.

- Issue #13727: Add 3 macros to access PyDateTime_Delta members:
  PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
  PyDateTime_DELTA_GET_MICROSECONDS.

- Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE,
  Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE,
  Py_UNICODE_JOIN_SURROGATES.

- Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented.

- PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with
  Mercurial.

- Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const
  char *` instead of `char *`.

- Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format.

Documentation
-------------

- Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
  Initial patch for #13491 by Johannes Vogel.

- Issue #13402: Document absoluteness of sys.executable.

- Issue #13883: PYTHONCASEOK also works on OS X.

- Issue #12949: Document the kwonlyargcount argument for the PyCode_New
  C API function.

- Issue #13513: Fix io.IOBase documentation to correctly link to the
  io.IOBase.readline method instead of the readline module.

- Issue #13237: Reorganise subprocess documentation to emphasise convenience
  functions and the most commonly needed arguments to Popen.

- Issue #13141: Demonstrate recommended style for socketserver examples.

- Issue #11818: Fix tempfile examples for Python 3.


What's New in Python 3.2?
=========================

*Release date: 20-Feb-2011*

Core and Builtins
-----------------

- Issue #11249: Fix potential crashes when using the limited API.

Build
-----

- Issue #11222: Fix non-framework shared library build on Mac OS X.

- Issue #11184: Fix large-file support on AIX.

- Issue #941346: Fix broken shared library build on AIX.

Documentation
-------------

- Issue #10709: Add updated AIX notes in Misc/README.AIX.


What's New in Python 3.2 Release Candidate 3?
=============================================

*Release date: 13-Feb-2011*

Core and Builtins
-----------------

- Issue #11134: Add missing fields to typeslots.h.

- Issue #11135: Remove redundant doc field from PyType_Spec.

- Issue #11067: Add PyType_GetFlags, to support PyUnicode_Check in the limited
  ABI.

- Issue #11118: Fix bogus export of None in python3.dll.

Library
-------

- Issue #11116: any error during addition of a message to a mailbox now causes a
  rollback, instead of leaving the mailbox partially modified.

- Issue #11132: Fix passing of "optimize" parameter when recursing in
  compileall.compile_dir().

- Issue #11110: Fix a potential decref of a NULL in sqlite3.

- Issue #8275: Fix passing of callback arguments with ctypes under Win64.  Patch
  by Stan Mihai.

Build
-----

- Issue #11079: The /Applications/Python x.x folder created by the Mac OS X
  installers now includes a link to the installed documentation and no longer
  includes an Extras directory.  The Tools directory is now installed in the
  framework under share/doc.

- Issue #11121: Fix building with --enable-shared.

Tests
-----

- Issue #10971: test_zipimport_support is once again compatible with the refleak
  hunter feature of test.regrtest.


What's New in Python 3.2 Release Candidate 2?
=============================================

*Release date: 30-Jan-2011*

Core and Builtins
-----------------

- Issue #10451: memoryview objects could allow to mutate a readable buffer.
  Initial patch by Ross Lagerwall.

Library
-------

- Issue #9124: mailbox now accepts binary input and reads and writes mailbox
  files in binary mode, using the email package's binary support to parse
  arbitrary email messages.  StringIO and text file input is deprecated,
  and string input fails early if non-ASCII characters are used, where
  previously it would fail when the email was processed in a later step.

- Issue #10845: Mitigate the incompatibility between the multiprocessing
  module on Windows and the use of package, zipfile or directory execution
  by special casing main modules that actually *are* called __main__.py.

- Issue #11045: Protect logging call against None argument.

- Issue #11052: Correct IDLE menu accelerators on Mac OS X for Save
  commands.

- Issue #11053: Fix IDLE "Syntax Error" windows to behave as in 2.x,
  preventing a confusing hung appearance on OS X with the windows
  obscured.

- Issue #10940: Workaround an IDLE hang on Mac OS X 10.6 when using the
  menu accelerators for Open Module, Go to Line, and New Indent Width.
  The accelerators still work but no longer appear in the menu items.

- Issue #10989: Fix a crash on SSLContext.load_verify_locations(None, True).

- Issue #11020: Command-line pyclbr was broken because of missing 2-to-3
  conversion.

- Issue #11019: Fixed BytesGenerator so that it correctly handles a Message
  with a None body.

- Issue #11014: Make 'filter' argument in tarfile.Tarfile.add() into a
  keyword-only argument.  The preceding positional argument was deprecated,
  so it made no sense to add filter as a positional argument.

- Issue #11004: Repaired edge case in deque.count().

- Issue #10974: IDLE no longer crashes if its recent files list includes files
  with non-ASCII characters in their path names.

- Have hashlib.algorithms_available and hashlib.algorithms_guaranteed both
  return sets instead of one returning a tuple and the other a frozenset.

- Issue #10987: Fix the recursion limit handling in the _pickle module.

- Issue #10983: Fix several bugs making tunnel requests in http.client.

- Issue #10955: zipimport uses ASCII encoding instead of cp437 to decode
  filenames, at bootstrap, if the codec registry is not ready yet. It is still
  possible to have non-ASCII filenames using the Unicode flag (UTF-8 encoding)
  for all file entries in the ZIP file.

- Issue #10949: Improved robustness of rotating file handlers.

- Issue #10955: Fix a potential crash when trying to mmap() a file past its
  length.  Initial patch by Ross Lagerwall.

- Issue #10898: Allow compiling the posix module when the C library defines
  a symbol named FSTAT.

- Issue #10980: the HTTP server now encodes headers with iso-8859-1 (latin1)
  encoding.  This is the preferred encoding of PEP 3333 and the base encoding
  of HTTP 1.1.

- To match the behaviour of HTTP server, the HTTP client library now also
  encodes headers with iso-8859-1 (latin1) encoding.  It was already doing
  that for incoming headers which makes this behaviour now consistent in
  both incoming and outgoing direction.

- Issue #9509: argparse now properly handles IOErrors raised by
  argparse.FileType.

- Issue #10961: The new pydoc server now better handles exceptions raised
  during request handling.

- Issue #10680: Fix mutually exclusive arguments for argument groups in
  argparse.

Build
-----

- Issue #11054: Allow Mac OS X installer builds to again work on 10.5 with
  the system-provided Python.


What's New in Python 3.2 Release Candidate 1
============================================

*Release date: 16-Jan-2011*

Core and Builtins
-----------------

- Issue #10889: range indexing and slicing now works correctly on ranges with
  a length that exceeds sys.maxsize.

- Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a
  class.

- Issue #8020: Avoid a crash where the small objects allocator would read
  non-Python managed memory while it is being modified by another thread.  Patch
  by Matt Bandy.

- Issue #10841: On Windows, set the binary mode on stdin, stdout, stderr and all
  io.FileIO objects (to not translate newlines, \r\n <=> \n).  The Python parser
  translates newlines (\r\n => \n).

- Remove buffer API from stable ABI for now, see #10181.

- Issue #8651: PyArg_Parse*() functions raise an OverflowError if the file
  doesn't have PY_SSIZE_T_CLEAN define and the size doesn't fit in an int
  (length bigger than 2^31-1 bytes).

- Issue #9015, #9611: FileIO.readinto(), FileIO.write(), os.write() and
  stdprinter.write() clamp the length to INT_MAX on Windows.

- Issue #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime()
  can now handle dates after 2038.

- Issue #10780: PyErr_SetFromWindowsErrWithFilename() and
  PyErr_SetExcFromWindowsErrWithFilename() decode the filename from the
  filesystem encoding instead of UTF-8.

- Issue #10779: PyErr_WarnExplicit() decodes the filename from the filesystem
  encoding instead of UTF-8.

- Add sys.flags attribute for the new -q command-line option.

- Issue #11506: Trying to assign to a bytes literal should result in a
  SyntaxError.

Library
-------

- Issue #10916: mmap should not segfault when a file is mapped using 0 as length
  and a non-zero offset, and an attempt to read past the end of file is made
  (IndexError is raised instead).  Patch by Ross Lagerwall.

- Issue #10154, #10090: change the normalization of UTF-8 to "UTF-8" instead
  of "UTF8" in the locale module as the latter is not supported MacOSX and OpenBSD.

- Issue #10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5, rather
  than the currently problematic Apple-supplied one, when running with the
  64-/32-bit installer variant.

- Issue #4953: cgi.FieldStorage and cgi.parse() parse the request as bytes, not
  as unicode, and accept binary files. Add encoding and errors attributes to
  cgi.FieldStorage. Patch written by Pierre Quentel (with many inputs by Glenn
  Linderman).

- Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl().

- Issue #10899: No function type annotations in the standard library.  Removed
  function type annotations from _pyio.py.

- Issue #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'.

- Issue #10872: The repr() of TextIOWrapper objects now includes the mode
  if available.

- Issue #10869: Fixed bug where ast.increment_lineno modified the root node
  twice.

- Issue #5871: email.header.Header.encode now raises an error if any
  continuation line in the formatted value has no leading white space and looks
  like a header.  Since Generator uses Header to format all headers, this check
  is made for all headers in any serialized message at serialization time.  This
  provides protection against header injection attacks.

- Issue #10859: Make ``contextlib.GeneratorContextManager`` officially
  private by renaming it to ``_GeneratorContextManager``.

- Issue #10042: Fixed the total_ordering decorator to handle cross-type
  comparisons that could lead to infinite recursion.

- Issue #10686: the email package now :rfc:`2047`\ -encodes headers with
  non-ASCII bytes (parsed by a BytesParser) when doing conversion to 7bit-clean
  presentation, instead of replacing them with ?s.

- email.header.Header was incorrectly encoding folding whitespace when
  rfc2047-encoding header values with embedded newlines, leaving them without
  folding whitespace.  It now uses the continuation_ws, as it does for
  continuation lines that it creates itself.

- Issue #1777412, #10827: Changed the rules for 2-digit years. The
  time.asctime(), time.ctime() and time.strftime() functions will now format
  any year when ``time.accept2dyear`` is False and will accept years >= 1000
  otherwise. ``time.mktime`` and ``time.strftime`` now accept full range
  supported by the OS. With Visual Studio or on Solaris, the year is limited to
  the range [1; 9999]. Conversion of 2-digit years to 4-digit is deprecated.

- Issue #7858: Raise an error properly when os.utime() fails under Windows
  on an existing file.

- Issue #3839: wsgiref should not override a Content-Length header set by
  the application.  Initial patch by Clovis Fabricio.

- Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the
  compilation (if the input is a string).

- Issue #7995: When calling accept() on a socket with a timeout, the returned
  socket is now always blocking, regardless of the operating system.

- Issue #10756: atexit normalizes the exception before displaying it. Patch by
  Andreas Stührk.

- Issue #10790: email.header.Header.append's charset logic now works correctly
  for charsets whose output codec is different from its input codec.

- Issue #10819: SocketIO.name property returns -1 when its closed, instead of
  raising a ValueError, to fix repr().

- Issue #8650: zlib.compress() and zlib.decompress() raise an OverflowError if
  the input buffer length doesn't fit into an unsigned int (length bigger than
  2^32-1 bytes).

- Issue #6643: Reinitialize locks held within the threading module after fork to
  avoid a potential rare deadlock or crash on some platforms.

- Issue #10806, issue #9905: Fix subprocess pipes when some of the standard file
  descriptors (0, 1, 2) are closed in the parent process.  Initial patch by Ross
  Lagerwall.

- `unittest.TestCase` can be instantiated without a method name; for simpler
  exploration from the interactive interpreter.

- Issue #10798: Reject supporting concurrent.futures if the system has too
  few POSIX semaphores.

- Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from
  the codec aliases. They are still accessible via codecs.lookup().

- Issue #10801: In zipfile, support different encodings for the header and the
  filenames.

- Issue #6285: IDLE no longer crashes on missing help file; patch by Scott
  David Daniels.

- Fix collections.OrderedDict.setdefault() so that it works in subclasses that
  define __missing__().

- Issue #10786: unittest.TextTestRunner default stream no longer bound at import
  time. `sys.stderr` now looked up at instantiation time.  Fix contributed by
  Mark Roddy.

- Issue #10753: Characters ';', '=' and ',' in the PATH_INFO environment variable
  won't be quoted when the URI is constructed by the wsgiref.util's request_uri
  method. According to RFC 3986, these characters can be a part of params in
  PATH component of URI and need not be quoted.

- Issue #10738: Fix webbrowser.Opera.raise_opts.

- Issue #9824: SimpleCookie now encodes , and ; in values to cater to how
  browsers actually parse cookies.

- Issue #9333: os.symlink now available regardless of user privileges.  The
  function now raises OSError on Windows >=6.0 when the user is unable to create
  symbolic links. XP and 2003 still raise NotImplementedError.

- Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8.

- Issue #10730: Add SVG mime types to mimetypes module.

- Issue #10768: Make the Tkinter ScrolledText widget work again.

- Issue #10777: Fix "dictionary changed size during iteration" bug in
  ElementTree register_namespace().

- Issue #10626: test_logging now preserves logger disabled states.

- Issue #10774: test_logging now removes temp files created during tests.

- Issue #5258/#10642: if site.py encounters a .pth file that generates an error,
  it now prints the filename, line number, and traceback to stderr and skips
  the rest of that individual file, instead of stopping processing entirely.

- Issue #10763: subprocess.communicate() closes stdout and stderr if both are
  pipes (bug specific to Windows).

- Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better
  compliance (no "s around encoded values).

- Improved the diff message in the unittest module's assertCountEqual().

- Issue #1155362: email.utils.parsedate_tz now handles a missing space before
  the '-' of a timezone field as well as before a '+'.

- Issue #4871: The zipfile module now gives a more useful error message if
  an attempt is made to use a string to specify the archive password.

- Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only.

- Deprecated assertDictContainsSubset() in the unittest module.

C-API
-----

- PyObject_CallMethod now passes along any underlying AttributeError from
  PyObject_GetAttr, instead of replacing it with something less informative

- Issue #10913: Deprecate misleading functions PyEval_AcquireLock() and
  PyEval_ReleaseLock().  The thread-state aware APIs should be used instead.

- Issue #10333: Remove ancient GC API, which has been deprecated since Python
  2.2.

Build
-----

- Issue #10843: Update third-party library versions used in OS X 32-bit
  installer builds: bzip2 1.0.6, readline 6.1.2, SQLite 3.7.4 (with FTS3/FTS4
  and RTREE enabled), and ncursesw 5.5 (wide-char support enabled).

- Issue #10820: Fix OS X framework installs to support version-specific
  scripts (#10679).

- Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in
  the configure script but use $GREP instead.  Patch by Fabian Groffen.

- Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD
  and DragonFly BSD.  Patch by Nicolas Joly.

- Issue #10679: The "idle", "pydoc" and "2to3" scripts are now installed with
  a version-specific suffix on "make altinstall".

- Issue #10655: Fix the build on PowerPC on Linux with GCC when building with
  timestamp profiling (--with-tsc): the preprocessor test for the PowerPC
  support now looks for "__powerpc__" as well as "__ppc__": the latter seems to
  only be present on OS X; the former is the correct one for Linux with GCC.

- Issue #1099: Fix the build on MacOSX when building a framework with pydebug
  using GCC 4.0.

Tools/Demos
-----------

- Issue #10843: Install the Tools directory on OS X in the applications Extras
  (/Applications/Python 3.n/Extras/) where the Demo directory had previous been
  installed.

- Issue #7962: The Demo directory is gone.  Most of the old and unmaintained
  demos have been removed, others integrated in documentation or a new
  Tools/demo subdirectory.

- Issue #10502: Addition of the unittestgui tool. Originally by Steve Purcell.
  Updated for test discovery by Mark Roddy and Python 3 compatibility by Brian
  Curtin.

Tests
-----

- Issue #11910: Fix test_heapq to skip the C tests when _heapq is missing.

- Fix test_startfile to wait for child process to terminate before finishing.

- Issue #10822: Fix test_posix:test_getgroups failure under Solaris.  Patch
  by Ross Lagerwall.

- Make the --coverage flag work for test.regrtest.

- Issue #1677694: Refactor and improve test_timeout.  Original patch by
  Björn Lindqvist.

- Issue #5485: Add tests for the UseForeignDTD method of expat parser objects.
  Patch by Jean-Paul Calderone and Sandro Tosi.

- Issue #6293: Have regrtest.py echo back sys.flags.  This is done by default in
  whole runs and enabled selectively using ``--header`` when running an explicit
  list of tests.  Original patch by Collin Winter.


What's New in Python 3.2 Beta 2?
================================

*Release date: 19-Dec-2010*

Core and Builtins
-----------------

- Issue #8844: Regular and recursive lock acquisitions can now be interrupted
  by signals on platforms using pthreads.  Patch by Reid Kleckner.

- Issue #4236: PyModule_Create2 now checks the import machinery directly
  rather than the Py_IsInitialized flag, avoiding a Fatal Python
  error in certain circumstances when an import is done in __del__.

- Issue #5587: add a repr to dict_proxy objects.  Patch by David Stanek and
  Daniel Urban.

Library
-------

- Issue #3243:  Support iterable bodies in httplib. Patch Contributions by
  Xuanji Li and Chris AtLee.

- Issue #10611: SystemExit exception will no longer kill a unittest run.

- Issue #9857: It is now possible to skip a test in a setUp, tearDown or clean
  up function.

- Issue #10573: use actual/expected consistently in unittest methods.
  The order of the args of assertCountEqual is also changed.

- Issue #9286: email.utils.parseaddr no longer concatenates blank-separated
  words in the local part of email addresses, thereby preserving the input.

- Issue #6791: Limit header line length (to 65535 bytes) in http.client
  and http.server, to avoid denial of services from the other party.

- Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle.

- Issue #9907: Fix tab handling on OSX when using editline by calling
  rl_initialize first, then setting our custom defaults, then reading .editrc.

- Issue #4188: Avoid creating dummy thread objects when logging operations
  from the threading module (with the internal verbose flag activated).

- Issue #10711: Remove HTTP 0.9 support from http.client.  The ``strict``
  parameter to HTTPConnection and friends is deprecated.

- Issue #9721: Fix the behavior of urljoin when the relative url starts with a
  ';' character. Patch by Wes Chow.

- Issue #10714: Limit length of incoming request in http.server to 65536 bytes
  for security reasons.  Initial patch by Ross Lagerwall.

- Issue #9558: Fix distutils.command.build_ext with VS 8.0.

- Issue #10667: Fast path for collections.Counter().

- Issue #10695: passing the port as a string value to telnetlib no longer
  causes debug mode to fail.

- Issue #1078919: add_header now automatically RFC2231 encodes parameters
  that contain non-ascii values.

- Issue #10188 (partial resolution): tempfile.TemporaryDirectory emits
  a warning on sys.stderr rather than throwing a misleading exception
  if cleanup fails due to nulling out of modules during shutdown.
  Also avoids an AttributeError when mkdtemp call fails and issues
  a ResourceWarning on implicit cleanup via __del__.

- Issue #10107: Warn about unsaved files in IDLE on OSX.

- Issue #7213: subprocess.Popen's default for close_fds has been changed.
  It is now True in most cases other than on Windows when input, output or
  error handles are provided.

- Issue #6559: subprocess.Popen has a new pass_fds parameter (actually
  added in 3.2beta1) to allow specifying a specific list of file descriptors
  to keep open in the child process.

- Issue #1731717: Fixed the problem where subprocess.wait() could cause an
  OSError exception when The OS had been told to ignore SIGCLD in our process
  or otherwise not wait for exiting child processes.

Tests
-----

- Issue #775964: test_grp now skips YP/NIS entries instead of failing when
  encountering them.

Tools/Demos
-----------

- Issue #6075: IDLE on Mac OS X now works with both Carbon AquaTk and
  Cocoa AquaTk.

- Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree.

- Issue #10706: Remove outdated script runtests.sh.  Either ``make test``
  or ``python -m test`` should be used instead.

Build
-----

- The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4.

- Issue #9234: argparse supports alias names for subparsers.


What's New in Python 3.2 Beta 1?
================================

*Release date: 05-Dec-2010*

Core and Builtins
-----------------

- Issue #10630: Return dict views from the dict proxy keys()/values()/items()
  methods.

- Issue #10596: Fix float.__mod__ to have the same behaviour as float.__divmod__
  with respect to signed zeros.  -4.0 % 4.0 should be 0.0, not -0.0.

- Issue #1772833: Add the -q command-line option to suppress copyright and
  version output in interactive mode.

- Provide an *optimize* parameter in the built-in compile() function.

- Fixed several corner case issues on Windows in os.stat/os.lstat related to
  reparse points.

- PEP 384 (Defining a Stable ABI) is implemented.

- Issue #2690: Range objects support negative indices and slicing.

- Issue #9915: Speed up sorting with a key.

- Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much
  larger than operand ``b``.  Patch by Andrew Bennetts.

- Issue #10518: Bring back the callable() builtin.

- Issue #7094: Added alternate formatting (specified by '#') to ``__format__``
  method of float, complex, and Decimal. This allows more precise control over
  when decimal points are displayed.

- Issue #10474: range.count() should return integers.

- Issue #1574217: isinstance now catches only AttributeError, rather than
  masking all errors.

Library
-------

- logging: added "handler of last resort". See http://bit.ly/last-resort-handler

- test.support: Added TestHandler and Matcher classes for better support of
  assertions about logging.

- Issue #4391: Use proper plural forms in argparse.

- Issue #10601: sys.displayhook uses 'backslashreplace' error handler on
  UnicodeEncodeError.

- Add the "display" and "undisplay" pdb commands.

- Issue #7245: Add a SIGINT handler in pdb that allows to break a program again
  after a "continue" command.

- Add the "interact" pdb command.

- Issue #7905: Actually respect the keyencoding parameter to shelve.Shelf.

- Issue #1569291: Speed up array.repeat().

- Provide an interface to set the optimization level of compilation in
  py_compile, compileall and zipfile.PyZipFile.

- Issue #7904: Changes to urllib.parse.urlsplit to handle schemes as defined by
  RFC3986. Anything before :// is considered a scheme and is followed by an
  authority (or netloc) and by '/' led path, which is optional.

- Issue #6045: dbm.gnu databases now support get() and setdefault() methods.

- Issue #10620: `python -m unittest` can accept file paths instead of module
  names for running specific tests.

- Issue #9424: Deprecate the `unittest.TestCase` methods `assertEquals`,
  `assertNotEquals`, `assertAlmostEquals`, `assertNotAlmostEquals` and `assert_`
  and replace them with the correct methods in the Python test suite.

- Issue #10272: The ssl module now raises socket.timeout instead of a generic
  SSLError on socket timeouts.

- Issue #10528: Allow translators to reorder placeholders in localizable
  messages from argparse.

- Issue #10497: Fix incorrect use of gettext in argparse.

- Issue #10478: Reentrant calls inside buffered IO objects (for example by
  way of a signal handler) now raise a RuntimeError instead of freezing the
  current process.

- logging: Added getLogRecordFactory/setLogRecordFactory with docs and tests.

- Issue #10549: Fix pydoc traceback when text-documenting certain classes.

- Issue #2001: New HTML server with enhanced Web page features.  Patch by Ron
  Adam.

- Issue #10360: In WeakSet, do not raise TypeErrors when testing for membership
  of non-weakrefable objects.

- Issue #940286: pydoc.Helper.help() ignores input/output init parameters.

- Issue #1745035: Add a command size and data size limit to smtpd.py, to prevent
  DoS attacks.  Patch by Savio Sena.

- Issue #4925: Add filename to error message when executable can't be found in
  subprocess.

- Issue #10391: Don't dereference invalid memory in error messages in the ast
  module.

- Issue #10027: st_nlink was not being set on Windows calls to os.stat or
  os.lstat. Patch by Hirokazu Yamamoto.

- Issue #9333: Expose os.symlink only when the SeCreateSymbolicLinkPrivilege is
  held by the user's account, i.e., when the function can actually be used.

- Issue #8879: Add os.link support for Windows.

- Issue #7911: ``unittest.TestCase.longMessage`` defaults to True for improved
  failure messages by default. Patch by Mark Roddy.

- Issue #1486713: HTMLParser now has an optional tolerant mode where it tries to
  guess at the correct parsing of invalid html.

- Issue #10554: Add context manager support to subprocess.Popen objects.

- Issue #8989: email.utils.make_msgid now has a domain parameter that can
  override the domain name used in the generated msgid.

- Issue #9299: Add exist_ok parameter to os.makedirs to suppress the 'File
  exists' exception when a target directory already exists with the specified
  mode. Patch by Ray Allen.

- Issue #9573: os.fork() now works correctly when triggered as a side effect of
  a module import.

- Issue #10464: netrc now correctly handles lines with embedded '#' characters.

- Added itertools.accumulate().

- Issue #4113: Added custom ``__repr__`` method to ``functools.partial``.
  Original patch by Daniel Urban.

- Issue #10273: Rename `assertRegexpMatches` and `assertRaisesRegexp` to
  `assertRegex` and `assertRaisesRegex`.

- Issue #10535: Enable silenced warnings in unittest by default.

- Issue #9873: The URL parsing functions in urllib.parse now accept ASCII byte
  sequences as input in addition to character strings.

- Issue #10586: The statistics API for the new functools.lru_cache has been
  changed to a single cache_info() method returning a named tuple.

- Issue #10323: itertools.islice() now consumes the minimum number of inputs
  before stopping.  Formerly, the final state of the underlying iterator was
  undefined.

- Issue #10565: The collections.Iterator ABC now checks for both __iter__ and
  __next__.

- Issue #10242: Fixed implementation of unittest.ItemsEqual and gave it a new
  more informative name, unittest.CountEqual.

- Issue #10561: In pdb, clear the breakpoints by the breakpoint number.

- Issue #2986: difflib.SequenceMatcher gets a new parameter, autojunk, which can
  be set to False to turn off the previously undocumented 'popularity'
  heuristic. Patch by Terry Reedy and Eli Bendersky.

- Issue #10534: in difflib, expose bjunk and bpopular sets; deprecate
  undocumented and now redundant isbjunk and isbpopular methods.

- Issue #9846: zipfile is now correctly closing underlying file objects.

- Issue #10459: Update CJK character names to Unicode 6.0.

- Issue #4493: urllib.request adds '/' in front of path components which does not
  start with '/. Common behavior exhibited by browsers and other clients.

- Issue #6378: idle.bat now runs with the appropriate Python version rather than
  the system default. Patch by Sridhar Ratnakumar.

- Issue #10470: 'python -m unittest' will now run test discovery by default,
  when no extra arguments have been provided.

- Issue #3709: BaseHTTPRequestHandler will buffer the headers and write to
  output stream only when end_headers is invoked. This is a speedup and an
  internal optimization.  Patch by endian.

- Issue #10220: Added inspect.getgeneratorstate. Initial patch by Rodolpho
  Eckhardt.

- Issue #10453: compileall now uses argparse instead of getopt, and thus
  provides clean output when called with '-h'.

- Issue #8078: Add constants for higher baud rates in the termios module.  Patch
  by Rodolpho Eckhardt.

- Issue #10407: Fix two NameErrors in distutils.

- Issue #10371: Deprecated undocumented functions in the trace module.

- Issue #10467: Fix BytesIO.readinto() after seeking into a position after the
  end of the file.

- configparser: 100% test coverage.

- Issue #10499: configparser supports pluggable interpolation handlers. The
  default classic interpolation handler is called BasicInterpolation. Another
  interpolation handler added (ExtendedInterpolation) which supports the syntax
  used by zc.buildout (e.g. interpolation between sections).

- configparser: the SafeConfigParser class has been renamed to ConfigParser.
  The legacy ConfigParser class has been removed but its interpolation mechanism
  is still available as LegacyInterpolation.

- configparser: Usage of RawConfigParser is now discouraged for new projects
  in favor of ConfigParser(interpolation=None).

- Issue #1682942: configparser supports alternative option/value delimiters.

- Issue #5412: configparser supports mapping protocol access.

- Issue #9411: configparser supports specifying encoding for read operations.

- Issue #9421: configparser's getint(), getfloat() and getboolean() methods
  accept vars and default arguments just like get() does.

- Issue #9452: configparser supports reading from strings and dictionaries
  (thanks to the mapping protocol API, the latter can be used to copy data
  between parsers).

- configparser: accepted INI file structure is now customizable, including
  comment prefixes, name of the DEFAULT section, empty lines in multiline
  values, and indentation.

- Issue #10326: unittest.TestCase instances can be pickled.

- Issue #9926: Wrapped TestSuite subclass does not get __call__ executed.

- Issue #9920: Skip tests for cmath.atan and cmath.atanh applied to complex
  zeros on systems where the log1p function fails to respect the sign of zero.
  This fixes a test failure on AIX.

- Issue #9732: Addition of getattr_static to the inspect module.

- Issue #10446: Module documentation generated by pydoc now links to a
  version-specific online reference manual.

- Make the 'No module named' exception message from importlib consistent.

- Issue #10443: Add the SSLContext.set_default_verify_paths() method.

- Issue #10440: Support RUSAGE_THREAD as a constant in the resource module.
  Patch by Robert Collins.

- Issue #10429: IMAP.starttls() stored the capabilities as bytes objects, rather
  than strings.

C-API
-----

- Issue #10557: Added a new API function, PyUnicode_TransformDecimalToASCII(),
  which transforms non-ASCII decimal digits in a Unicode string to their ASCII
  equivalents.

- Issue #9518: Extend the PyModuleDef_HEAD_INIT macro to explicitly
  zero-initialize all fields, fixing compiler warnings seen when building
  extension modules with gcc with "-Wmissing-field-initializers" (implied by
  "-W").

- Issue #10255: Fix reference leak in Py_InitializeEx().  Patch by Neil
  Schemenauer.

- structseq.h is now included in Python.h.

- Loosen PyArg_ValidateKeywordArguments to allow dict subclasses.

Tests
-----

- regrtest.py once again ensures the test directory is removed from sys.path
  when it is invoked directly as the __main__ module.

- `python -m test` can be used to run the test suite as well as `python -m
  test.regrtest`.

- Do not fail test_socket when the IP address of the local hostname cannot be
  looked up.

- Issue #8886: Use context managers throughout test_zipfile. Patch by Eric
  Carstensen.

Build
-----

- Issue #10325: Fix two issues in the fallback definitions for PY_ULLONG_MAX and
  PY_LLONG_MAX that made them unsuitable for use in preprocessor conditionals.

Documentation
-------------

- Issue #10299: List the built-in functions in a table in functions.rst.


What's New in Python 3.2 Alpha 4?
=================================

*Release date: 13-Nov-2010*

Core and Builtins
-----------------

- Issue #10372: Import the warnings module only after the IO library is
  initialized, so as to avoid bootstrap issues with the '-W' option.

- Issue #10293: Remove obsolete field in the PyMemoryView structure, unused
  undocumented value PyBUF_SHADOW, and strangely-looking code in
  PyMemoryView_GetContiguous.

- Issue #6081: Add str.format_map(), similar to ``str.format(**mapping)``.

- If FileIO.__init__ fails, close the file descriptor.

- Issue #10221: dict.pop(k) now has a key error message that includes the
  missing key (same message d[k] returns for missing keys).

- Issue #5437: A preallocated MemoryError instance should not keep traceback
  data (including local variables caught in the stack trace) alive infinitely.

- Issue #10186: Fix the SyntaxError caret when the offset is equal to the length
  of the offending line.

- Issue #10089: Add support for arbitrary -X options on the command line.  They
  can be retrieved through a new attribute ``sys._xoptions``.

- Issue #4388: On Mac OS X, decode command line arguments from UTF-8, instead of
  the locale encoding.  If the LANG (and LC_ALL and LC_CTYPE) environment
  variable is not set, the locale encoding is ISO-8859-1, whereas most programs
  (including Python) expect UTF-8.  Python already uses UTF-8 for the filesystem
  encoding and to encode command line arguments on this OS.

- Issue #9713, #10114: Parser functions (e.g. PyParser_ASTFromFile) expect
  filenames encoded to the filesystem encoding with the surrogateescape error
  handler (to support undecodable bytes), instead of UTF-8 in strict mode.

- Issue #9997: Don't let the name "top" have special significance in scope
  resolution.

- Issue #9862: Compensate for broken PIPE_BUF in AIX by hard coding its value as
  the default 512 when compiling on AIX.

- Use locale encoding instead of UTF-8 to encode and decode filenames if
  Py_FileSystemDefaultEncoding is not set.

- Issue #10095: fp_setreadl() doesn't reopen the file, instead reuse the file
  descriptor.

- Issue #9418: Moved private string methods ``_formatter_parser`` and
  ``_formatter_field_name_split`` into a new ``_string`` module.

- Issue #9992: Remove PYTHONFSENCODING environment variable.

Library
-------

- Issue #12943: python -m tokenize support has been added to tokenize.

- Issue #10465: fix broken delegating of attributes by gzip._PaddedFile.

- Issue #10356: Decimal.__hash__(-1) should return -2.

- Issue #1553375: logging: Added stack_info kwarg to display stack information.

- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru.

- Fix Fraction.__hash__ so that Fraction.__hash__(-1) is -2.  (See also issue
  #10356.)

- Issue #4471: Add the IMAP.starttls() method to enable encryption on standard
  IMAP4 connections.  Original patch by Lorenzo M. Catucci.

- Issue #1466065: Add 'validate' option to base64.b64decode to raise an error if
  there are non-base64 alphabet characters in the input.

- Issue #10386: Add __all__ to token module; this simplifies importing in
  tokenize module and prevents leaking of private names through ``import *``.

- Issue #4471: Properly shutdown socket in IMAP.shutdown().  Patch by Lorenzo
  M. Catucci.

- Fix IMAP.login() to work properly.

- Issue #9244: multiprocessing pool worker processes could terminate
  unexpectedly if the return value of a task could not be pickled.  Only the
  ``repr`` of such errors are now sent back, wrapped in an
  ``MaybeEncodingError`` exception.

- Issue #9244: The ``apply_async()`` and ``map_async()`` methods of
  ``multiprocessing.Pool`` now accepts a ``error_callback`` argument.  This can
  be a callback with the signature ``callback(exc)``, which will be called if
  the target raises an exception.

- Issue #10022: The dictionary returned by the ``getpeercert()`` method of SSL
  sockets now has additional items such as ``issuer`` and ``notBefore``.

- ``usenetrc`` is now false by default for NNTP objects.

- Issue #1926: Add support for NNTP over SSL on port 563, as well as STARTTLS.
  Patch by Andrew Vant.

- Issue #10335: Add tokenize.open(), detect the file encoding using
  tokenize.detect_encoding() and open it in read only mode.

- Issue #10321: Add support for binary data to smtplib.SMTP.sendmail, and a new
  method send_message to send an email.message.Message object.

- Issue #6011: sysconfig and distutils.sysconfig use the surrogateescape error
  handler to parse the Makefile file.  Avoid a UnicodeDecodeError if the source
  code directory name contains a non-ASCII character and the locale encoding is
  ASCII.

- Issue #10329: The trace module writes reports using the input Python script
  encoding, instead of the locale encoding.  Patch written by Alexander
  Belopolsky.

- Issue #10126: Fix distutils' test_build when Python was built with
  --enable-shared.

- Issue #9281: Prevent race condition with mkdir in distutils.  Patch by
  Arfrever.

- Issue #10229: Fix caching error in gettext.

- Issue #10252: Close file objects in a timely manner in distutils code and
  tests.  Patch by Brian Brazil, completed by Éric Araujo.

- Issue #10180: Pickling file objects is now explicitly forbidden, since
  unpickling them produced nonsensical results.

- Issue #10311: The signal module now restores errno before returning from its
  low-level signal handler.  Patch by Hallvard B Furuseth.

- Issue #10282: Add a ``nntp_implementation`` attribute to NNTP objects.

- Issue #10283: Add a ``group_pattern`` argument to NNTP.list().

- Issue #10155: Add IISCGIHandler to wsgiref.handlers to support IIS CGI
  environment better, and to correct unicode environment values for WSGI 1.0.1.

- Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER
  response, instead of raising an exception.

- wsgiref now implements and validates PEP 3333, rather than an experimental
  extension of PEP 333.  (Note: earlier versions of Python 3.x may have
  incorrectly validated some non-compliant applications as WSGI compliant; if
  your app validates with Python <3.2b1+, but not on this version, it is likely
  the case that your app was not compliant.)

- Issue #10280: NNTP.nntp_version should reflect the highest version advertised
  by the server.

- Issue #10184: Touch directories only once when extracting a tarfile.

- Issue #10199: New package, ``turtledemo`` now contains selected demo scripts
  that were formerly found under Demo/turtle.

- Issue #10265: Close file objects explicitly in sunau.  Patch by Brian Brazil.

- Issue #10266: uu.decode didn't close in_file explicitly when it was given as a
  filename.  Patch by Brian Brazil.

- Issue #10110: Queue objects didn't recognize full queues when the maxsize
  parameter had been reduced.

- Issue #10160: Speed up operator.attrgetter.  Patch by Christos Georgiou.

- logging: Added style option to basicConfig() to allow %, {} or $-formatting.

- Issue #5729: json.dumps() now supports using a string such as '\t' for
  pretty-printing multilevel objects.

- Issue #10253: FileIO leaks a file descriptor when trying to open a file for
  append that isn't seekable.  Patch by Brian Brazil.

- Support context manager protocol for file-like objects returned by mailbox
  ``get_file()`` methods.

- Issue #10246: uu.encode didn't close file objects explicitly when filenames
  were given to it.  Patch by Brian Brazil.

- Issue #10198: fix duplicate header written to wave files when writeframes() is
  called without data.

- Close file objects in modulefinder in a timely manner.

- Close a io.TextIOWrapper object in email.parser in a timely manner.

- Close a file object in distutils.sysconfig in a timely manner.

- Close a file object in pkgutil in a timely manner.

- Issue #10233: Close file objects in a timely manner in the tarfile module and
  its test suite.

- Issue #10093: ResourceWarnings are now issued when files and sockets are
  deallocated without explicit closing.  These warnings are silenced by default,
  except in pydebug mode.

- tarfile.py: Add support for all missing variants of the GNU sparse extensions
  and create files with holes when extracting sparse members.

- Issue #10218: Return timeout status from ``Condition.wait`` in threading.

- Issue #7351: Add ``zipfile.BadZipFile`` spelling of the exception name and
  deprecate the old name ``zipfile.BadZipfile``.

- Issue #5027: The standard ``xml`` namespace is now understood by
  xml.sax.saxutils.XMLGenerator as being bound to
  http://www.w3.org/XML/1998/namespace.  Patch by Troy J. Farrell.

- Issue #5975: Add csv.unix_dialect class.

- Issue #7761: telnetlib.interact failures on Windows fixed.

- logging: Added style option to Formatter to allow %, {} or $-formatting.

- Issue #5178: Added tempfile.TemporaryDirectory class that can be used as a
  context manager.

- Issue #1349106: Generator (and BytesGenerator) flatten method and Header
  encode method now support a 'linesep' argument.

- Issue #5639: Add a *server_hostname* argument to ``SSLContext.wrap_socket`` in
  order to support the TLS SNI extension.  ``HTTPSConnection`` and ``urlopen()``
  also use this argument, so that HTTPS virtual hosts are now supported.

- Issue #10166: Avoid recursion in pstats Stats.add() for many stats items.

- Issue #10163: Skip unreadable registry keys during mimetypes initialization.

- logging: Made StreamHandler terminator configurable.

- logging: Allowed filters to be just callables.

- logging: Added tests for _logRecordClass changes.

- Issue #10092: Properly reset locale in calendar.Locale*Calendar classes.

- logging: Added _logRecordClass, getLogRecordClass, setLogRecordClass to
  increase flexibility of LogRecord creation.

- Issue #5117: Case normalization was needed on ntpath.relpath().  Also fixed
  root directory issue on posixpath.relpath().  (Ported working fixes from
  ntpath.)

- Issue #1343: xml.sax.saxutils.XMLGenerator now has an option
  short_empty_elements to direct it to use self-closing tags when appropriate.

- Issue #9807 (part 1): Expose the ABI flags in sys.abiflags.  Add --abiflags
  switch to python-config for command line access.

- Issue #6098: Don't claim DOM level 3 conformance in minidom.

- Issue #5762: Fix AttributeError raised by ``xml.dom.minidom`` when an empty
  XML namespace attribute is encountered.

- Issue #2830: Add the ``html.escape()`` function, which quotes all problematic
  characters by default.  Deprecate ``cgi.escape()``.

- Issue #9409: Fix the regex to match all kind of filenames, for interactive
  debugging in doctests.

- Issue #9183: ``datetime.timezone(datetime.timedelta(0))`` will now return the
  same instance as ``datetime.timezone.utc``.

- Issue #7523: Add SOCK_CLOEXEC and SOCK_NONBLOCK to the socket module, where
  supported by the system.  Patch by Nikita Vetoshkin.

- Issue #10063: file:// scheme will stop accessing remote hosts via ftp
  protocol. file:// urls had fallback to access remote hosts via ftp. This was
  not correct, change is made to raise a URLError when a remote host is tried to
  access via file:// scheme.

- Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is
  created in modes 'a' or 'w' and then closed without adding any files. Raise
  BadZipfile (rather than IOError) when opening small non-ZIP files.

- Issue #10041: The signature of optional arguments in socket.makefile() didn't
  match that of io.open(), and they also didn't get forwarded properly to
  TextIOWrapper in text mode.  Patch by Kai Zhu.

- Issue #9003: http.client.HTTPSConnection, urllib.request.HTTPSHandler and
  urllib.request.urlopen now take optional arguments to allow for server
  certificate checking, as recommended in public uses of HTTPS.

- Issue #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the
  current directory was deleted. Patch written by W. Trevor King.

- Issue #3873: Speed up unpickling from file objects that have a peek() method.

- Issue #10075: Add a session_stats() method to SSLContext objects.

- Issue #9948: Fixed problem of losing filename case information.

Extension Modules
-----------------

- Issue #5109: array.array constructor will now use fast code when
  initial data is provided in an array object with correct type.

- Issue #6317: Now winsound.PlaySound only accepts unicode.

- Issue #6317: Now winsound.PlaySound can accept non ascii filename.

- Issue #9377: Use Unicode API for gethostname on Windows.

- Issue #10143: Update "os.pathconf" values.

- Issue #6518: Support context manager protcol for ossaudiodev types.

- Issue #678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY.

- Issue #9054: Fix a crash occurring when using the pyexpat module with expat
  version 2.0.1.

- Issue #5355: Provide mappings from Expat error numbers to string descriptions
  and backwards, in order to actually make it possible to analyze error codes
  provided by ExpatError.

- The Unicode database was updated to 6.0.0.

C-API
-----

- Issue #10288: The deprecated family of "char"-handling macros
  (ISLOWER()/ISUPPER()/etc) have now been removed: use Py_ISLOWER() etc instead.

- Issue #9778: Hash values are now always the size of pointers. A new Py_hash_t
  type has been introduced.

Tools/Demos
-----------

- Issue #10117: Tools/scripts/reindent.py now accepts source files that use
  encoding other than ASCII or UTF-8.  Source encoding is preserved when
  reindented code is written to a file.

- Issue #7287: Demo/imputil/knee.py was removed.

Tests
-----

- Issue #3699: Fix test_bigaddrspace and extend it to test bytestrings as well
  as unicode strings.  Initial patch by Sandro Tosi.

- Issue #10294: Remove dead code form test_unicode_file.

- Issue #10123: Don't use non-ascii filenames in test_doctest tests. Add a new
  test specific to unicode (non-ascii name and filename).

Build
-----

- Issue #10268: Add a --enable-loadable-sqlite-extensions option to configure.

- Issue #8852: Allow the socket module to build on OpenSolaris.

- Drop -OPT:Olimit compiler option.

- Issue #10094: Use versioned .so files on GNU/kfreeBSD and the GNU Hurd.

- Accept Oracle Berkeley DB 5.0 and 5.1 as backend for the dbm extension.

- Issue #7473: avoid link errors when building a framework with a different set
  of architectures than the one that is currently installed.


What's New in Python 3.2 Alpha 3?
=================================

*Release date: 09-Oct-2010*

Core and Builtins
-----------------

- Issue #10068: Global objects which have reference cycles with their module's
  dict are now cleared again. This causes issue #7140 to appear again.

- Issue #9738: Document PyErr_SetString() and PyErr_SetFromErrnoWithFilename()
  encodings.

- ast.literal_eval() can now handle negative numbers.  It is also a little more
  liberal in what it accepts without compromising the safety of the evaluation.
  For example, 3j+4 and 3+4+5 are both accepted.

- Issue #10006: type.__abstractmethods__ now raises an AttributeError.  As a
  result metaclasses can now be ABCs (see #9533).

- Issue #8670: ctypes.c_wchar supports non-BMP characters with 32 bits wchar_t.

- Issue #8670: PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() replace
  UTF-16 surrogate pairs by single non-BMP characters for 16 bits Py_UNICODE and
  32 bits wchar_t (eg. Linux in narrow build).

- Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression
  introduced by issue #9324.

- Issue #9979: Create function PyUnicode_AsWideCharString().

- Issue #7397: Mention that importlib.import_module() is probably what someone
  really wants to be using in __import__'s docstring.

- Issue #8521: Allow CreateKeyEx, OpenKeyEx, and DeleteKeyEx functions of winreg
  to use named arguments.

- Issue #9930: Remove bogus subtype check that was causing (e.g.)
  float.__rdiv__(2.0, 3) to return NotImplemented instead of the expected 1.5.

- Issue #9808: Implement os.getlogin for Windows. Patch by Jon Anglin.

- Issue #9901: Destroying the GIL in Py_Finalize() can fail if some other
  threads are still running.  Instead, reinitialize the GIL on a second call to
  Py_Initialize().

- All SyntaxErrors now have a column offset and therefore a caret when the error
  is printed.

- Issue #9252: PyImport_Import no longer uses a fromlist hack to return the
  module that was imported, but instead gets the module from sys.modules.

- Issue #9213: The range type_items now provides index() and count() methods, to
  conform to the Sequence ABC.  Patch by Daniel Urban and Daniel Stutzbach.

- Issue #7994: Issue a PendingDeprecationWarning if object.__format__ is called
  with a non-empty format string.  This is an effort to future-proof user
  code. If a derived class does not currently implement __format__ but later
  adds its own __format__, it would most likely break user code that had
  supplied a format string.  This will be changed to a DeprecationWaring in
  Python 3.3 and it will be an error in Python 3.4.

- Issue #9828: Destroy the GIL in Py_Finalize(), so that it gets properly
  re-created on a subsequent call to Py_Initialize().  The problem (a crash)
  wouldn't appear in 3.1 or 2.7 where the GIL's structure is more trivial.

- Issue #9210: Configure option --with-wctype-functions was removed.  Using the
  functions from the libc caused the methods .upper() and lower() to become
  locale aware and created subtly wrong results.

- Issue #9738: PyUnicode_FromFormat() and PyErr_Format() raise an error on a
  non-ASCII byte in the format string.

- Issue #4617: Previously it was illegal to delete a name from the local
  namespace if it occurs as a free variable in a nested block.  This limitation
  of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF).

- Issue #9804: ascii() now always represents unicode surrogate pairs as a single
  ``\UXXXXXXXX``, regardless of whether the character is printable or not.
  Also, the "backslashreplace" error handler now joins surrogate pairs into a
  single character on UCS-2 builds.

- Issue #9757: memoryview objects get a release() method to release the
  underlying buffer (previously this was only done when deallocating the
  memoryview), and gain support for the context management protocol.

- Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid
  thread-local storage key.

Library
-------

- Issue #2236: distutils' mkpath ignored the mode parameter.

- Fix typo in one sdist option (medata-check).

- Issue #9199: Fix incorrect use of distutils.cmd.Command.announce.

- Issue #1718574: Fix options that were supposed to accept arguments but did
  not in build_clib.

- Issue #9437: Fix building C extensions with non-default LDFLAGS.

- Issue #4661: email can now parse bytes input and generate either converted
  7bit output or bytes output.  Email version bumped to 5.1.0.

- Issue #1589: Add ssl.match_hostname(), to help implement server identity
  verification for higher-level protocols.

- Issue #9759: GzipFile now raises ValueError when an operation is attempted
  after the file is closed.  Patch by Jeffrey Finkelstein.

- Issue #9042: Fix interaction of custom translation classes and caching in
  gettext.

- Issue #6706: asyncore.dispatcher now provides a handle_accepted() method
  returning a (sock, addr) pair which is called when a connection has been
  established with a new remote endpoint.  This is supposed to be used as a
  replacement for old handle_accept() and avoids the user to call accept()
  directly.

- Issue #9065: tarfile no longer uses "root" as the default for the uname and
  gname field.

- Issue #8980: Fixed a failure in distutils.command check that was shadowed by
  an environment that does not have docutils.  Patch by Arfrever.

- Issue #1050268: parseaddr now correctly quotes double quote and backslash
  characters that appear inside quoted strings in email addresses.

- Issue #10004: quoprimime no longer generates a traceback when confronted with
  invalid characters after '=' in a Q-encoded word.

- Issue #1491: BaseHTTPServer nows send a ``100 Continue`` response before
  sending a 200 OK for the Expect: 100-continue request header.

- Issue #9360: Cleanup and improvements to the nntplib module.  The API now
  conforms to the philosophy of bytes and unicode separation in Python 3.  A
  test suite has also been added.

- Issue #9962: GzipFile now has the peek() method.

- Issue #9090: When a socket with a timeout fails with EWOULDBLOCK or EAGAIN,
  retry the select() loop instead of bailing out.  This is because select() can
  incorrectly report a socket as ready for reading (for example, if it received
  some data with an invalid checksum).

- Issue #3612: Added new types to ctypes.wintypes. (CHAR and pointers)

- Issue #9950: Fix socket.sendall() crash or misbehaviour when a signal is
  received.  Now sendall() properly calls signal handlers if necessary, and
  retries sending if these returned successfully, including on sockets with a
  timeout.

- Issue #9947: logging: Fixed locking bug in stopListening.

- Issue #9945: logging: Fixed locking bugs in addHandler/removeHandler.

- Issue #9936: Fixed executable lines' search in the trace module.

- Issue #9790: Rework imports necessary for samefile and sameopenfile
  in ntpath.

- Issue #9928: Properly initialize the types exported by the bz2 module.

- Issue #1675951: Allow GzipFile to work with unseekable file objects.  Patch by
  Florian Festi.

- Logging: Added QueueListener class to facilitate logging usage for
  performance-critical threads.

- Issue #9916: Add some missing errno symbols.

- Issue #9877: Expose sysconfig.get_makefile_filename()

- logging: Added hasHandlers() method to Logger and LoggerAdapter.

- Issue #9908: Fix os.stat() on bytes paths under Windows 7.

- Issue #2643: msync() is not called anymore when deallocating an open mmap
  object, only munmap().

- logging: Changed LoggerAdapter implementation internally, to make it easier to
  subclass in a useful way.

- logging: hasHandlers method was added to Logger, and isEnabledFor,
  getEffectiveLevel, hasHandlers and setLevel were added to LoggerAdapter.
  LoggerAdapter was introduced into the unit tests for logging.

- Issue #1686: Fix string.Template when overriding the pattern attribute.

- Issue #9854: SocketIO objects now observe the RawIOBase interface in
  non-blocking mode: they return None when an operation would block (instead of
  raising an exception).

- Issue #1730136: Fix the comparison between a tk.font.Font and an object of
  another kind.

- Issue #9441: logging has better coverage for rotating file handlers.

- Issue #9865: collections.OrderedDict now has a __sizeof__ method.

- Issue #9854: The default read() implementation in io.RawIOBase now handles
  non-blocking readinto() returning None correctly.

- Issue #1552: socket.socketpair() now returns regular socket.socket objects
  supporting the whole socket API (rather than the "raw" _socket.socket
  objects).

- Issue #9853: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto()
  to match the corresponding socket methods.

- Issue #9840: Added a decorator to reprlib for wrapping __repr__ methods to make
  them handle recursive calls within the same thread.

- logging: Enhanced HTTPHandler with secure and credentials initializers.

- Issue #767645: Set os.path.supports_unicode_filenames to True on Mac OS X.

- Issue #9837: The read() method of ZipExtFile objects (as returned by
  ZipFile.open()) could return more bytes than requested.

- Issue #9826: OrderedDict.__repr__ can now handle self-referential values:
  d['x'] = d.

- Issue #9825: Using __del__ in the definition of collections.OrderedDict made
  it possible for the user to create self-referencing ordered dictionaries which
  become permanently uncollectable GC garbage.  Reinstated the Python 3.1
  approach of using weakref proxies so that reference cycles never get created
  in the first place.

- Issue #9579, #9580: Fix os.confstr() for value longer than 255 bytes and
  encode the value with filesystem encoding and surrogateescape (instead of
  utf-8 in strict mode) . Patch written by David Watson.

- Issue #9632: Remove sys.setfilesystemencoding() function: use PYTHONFSENCODING
  environment variable to set the filesystem encoding at Python startup.
  sys.setfilesystemencoding() creates inconsistencies because it is unable to
  reencode all filenames in all objects.

- Issue #9410: Various optimizations to the pickle module, leading to speedups
  up to 4x (depending on the benchmark).  Mostly ported from Unladen Swallow;
  initial patch by Alexandre Vassalotti.

- The pprint module now supports printing OrderedDicts in their given order
  (formerly, it would sort the keys).

- Logging: Added QueueHandler class to facilitate logging usage with
  multiprocessing.

- Issue #9707: Rewritten reference implementation of threading.local which is
  friendlier towards reference cycles.  This change is not normally visible
  since an optimized C implementation (_thread._local) is used instead.

- Issue #6394: os.getppid() is now supported on Windows.  Note that it will
  still return the id of the parent process after it has exited.  This process
  id may even have been reused by another unrelated process.

- Issue #9792: In case of connection failure, socket.create_connection() would
  swallow the exception and raise a new one, making it impossible to fetch the
  original errno, or to filter timeout errors.  Now the original error is
  re-raised.

- Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True, and
  the passed buffer was exactly 1024 bytes long, the buffer wouldn't be updated
  back after the system call.  Original patch by Brian Brazil.

- Updates to the random module:

  * Document which parts of the module are guaranteed to stay the same across
    versions and which parts are subject to change.

  * Update the seed() method to use all of the bits in a string instead of just
    the hash value.  This makes better use of the seed value and assures the
    seeding is platform independent.  Issue #7889.

  * Improved the random()-->integer algorithm used in choice(), shuffle(),
    sample(), randrange(), and randint().  Formerly, it used int(n*random())
    which has a slight bias whenever n is not a power of two.  Issue #9025.

  * Improved documentation of arguments to randrange().  Issue #9379.

- collections.OrderedDict now supports a new method for repositioning keys to
  either end.

- Issue #9754: Similarly to assertRaises and assertRaisesRegexp, unittest test
  cases now also have assertWarns and assertWarnsRegexp methods to check that a
  given warning type was triggered by the code under test.

- Issue #5506: BytesIO objects now have a getbuffer() method exporting a view of
  their contents without duplicating them.  The view is both readable and
  writable.

- Issue #7566: Implement os.path.sameopenfile for Windows.

- Issue #9293: I/O streams now raise ``io.UnsupportedOperation`` when an
  unsupported operation is attempted (for example, writing to a file open only
  for reading).

- hashlib has two new constant attributes: algorithms_guaranteed and
  algorithms_avaiable that respectively list the names of hash algorithms
  guaranteed to exist in all Python implementations and the names of hash
  algorithms available in the current process.

- A new package ``concurrent.futures`` as defined by PEP 3148.

C-API
-----

- Add PyErr_SyntaxLocationEx, which supports passing a column offset.

- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or
  PySequence_DelSlice when the object doesn't have any mapping operations
  defined.

Tools/Demos
-----------

- Issue #9188: The gdb extension now handles correctly narrow (UCS2) as well as
  wide (UCS4) unicode builds for both the host interpreter (embedded inside gdb)
  and the interpreter under test.

Tests
-----

- Issue #9308: Added tests for importing encoded modules that do not
  depend on specific stdlib modules being encoded in a certain way.

- Issue #1051: Add a script (Lib/test/make_ssl_certs.py) to generate the custom
  certificate and private key files used by SSL-related certs.

- Issue #9978: Wait until subprocess completes initialization. (Win32KillTests
  in test_os)

- Issue #7110: regrtest now sends test failure reports and single-failure
  tracebacks to stderr rather than stdout.

- Issue #9628: fix runtests.sh -x option so more than one test can be excluded.

- Issue #9899: Fix test_tkinter.test_font on various platforms.  Patch by Ned
  Deily.

- Issue #9894: Do not hardcode ENOENT in test_subprocess.

- Issue #9315: Added tests for the trace module.  Patch by Eli Bendersky.

- Issue #9323: Make test.regrtest.__file__ absolute, this was not always the
  case when running profile or trace, for example.

- Issue #9568: Fix test_urllib2_localnet on OS X 10.3.

Build
-----

- Issue #10062: Allow building on platforms which do not have sem_timedwait.

- Issue #10054: Some platforms provide uintptr_t in inttypes.h.  Patch by Akira
  Kitada.

- Issue #10055: Make json C89-compliant in UCS4 mode.

- Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows)

- Issue #1633863: Don't ignore $CC under AIX.

- Issue #9810: Compile bzip2 source files in Python's project file directly. It
  used to be built with bzip2's makefile.

- Issue #9848: Stopping trying to build _weakref in setup.py as it is a built-in
  module.

- Issue #9806: python-config now has an ``--extension-suffix`` option that
  outputs the suffix for dynamic libraries including the ABI version name
  defined by PEP 3149.

- Issue #941346: Improve the build process under AIX and allow Python to be
  built as a shared library.  Patch by Sébastien Sablé.

- Issue #4026: Make the fcntl extension build under AIX.  Patch by Sébastien
  Sablé.

- Issue #9701: The MacOSX installer can patch the shell profile to ensure that
  the "bin" directory inside the framework is on the shell's search path. This
  feature now also supports the ZSH shell.


What's New in Python 3.2 Alpha 2?
=================================

*Release date: 05-Sep-2010*

Core and Builtins
-----------------

- Issue #9225: Remove the ROT_FOUR and DUP_TOPX opcode, the latter replaced by
  the new (and simpler) DUP_TOP_TWO.  Performance isn't changed, but our
  bytecode is a bit simplified.  Patch by Demur Rumed.

- Issue #9766: Rename poorly named variables exposed by _warnings to prevent
  confusion with the proper variables names from 'warnings' itself.

- Issue #9212: dict_keys and dict_items now provide the isdisjoint() method, to
  conform to the Set ABC.  Patch by Daniel Urban.

- Issue #9737: Fix a crash when trying to delete a slice or an item from a
  memoryview object.

- Issue #9549: sys.setdefaultencoding() and PyUnicode_SetDefaultEncoding() are
  now removed, since their effect was inexistent in 3.x (the default encoding is
  hardcoded to utf-8 and cannot be changed).

- Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API
  properly.  Patch by Stefan Behnel.

- Issue #5553: The Py_LOCAL_INLINE macro now results in inlining on most
  platforms.  Previously, it inlined only when using Microsoft Visual C.

- Issue #9712: Fix tokenize on identifiers that start with non-ascii names.

- Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.

- Issue #9684: Added a definition for SIZEOF_WCHAR_T to PC/pyconfig.h, to match
  the pyconfig.h generated by configure on other systems.

- Issue #9666: Only catch AttributeError in hasattr(). All other exceptions that
  occur during attribute lookup are now propagated to the caller.

- Issue #8622: Add PYTHONFSENCODING environment variable to override the
  filesystem encoding.

- Issue #5127: The C functions that access the Unicode Database now accept and
  return characters from the full Unicode range, even on narrow unicode builds
  (Py_UNICODE_TOLOWER, Py_UNICODE_ISDECIMAL, and others).  A visible difference
  in Python is that unicodedata.numeric() now returns the correct value for
  large code points, and repr() may consider more characters as printable.

- Issue #9425: Create PyModule_GetFilenameObject() function to get the filename
  as a unicode object, instead of a byte string. Function needed to support
  unencodable filenames. Deprecate PyModule_GetFilename() in favor on the new
  function.

- Issue #8063: Call _PyGILState_Init() earlier in Py_InitializeEx().

- Issue #9612: The set object is now 64-bit clean under Windows.

- Issue #8202: sys.argv[0] is now set to '-m' instead of '-c' when searching for
  the module file to be executed with the -m command line option.

- Issue #9599: Create PySys_FormatStdout() and PySys_FormatStderr() functions to
  write a message formatted by PyUnicode_FromFormatV() to sys.stdout and
  sys.stderr.

- Issue #9542: Create PyUnicode_FSDecoder() function, a ParseTuple converter:
  decode bytes objects to unicode using PyUnicode_DecodeFSDefaultAndSize(); str
  objects are output as-is.

- Issue #9203: Computed gotos are now enabled by default on supported compilers
  (which are detected by the configure script).  They can still be disable
  selectively by specifying --without-computed-gotos.

- Issue #9425: Create PyErr_WarnFormat() function, similar to PyErr_WarnEx() but
  use PyUnicode_FromFormatV() to format the warning message.

- Issue #8530: Prevent stringlib fastsearch from reading beyond the front of an
  array.

- Issue #5319: Print an error if flushing stdout fails at interpreter shutdown.

- Issue #9337: The str() of a float or complex number is now identical to its
  repr().

- Issue #9416: Fix some issues with complex formatting where the output with no
  type specifier failed to match the str output:

    - format(complex(-0.0, 2.0), '-') omitted the real part from the output,
    - format(complex(0.0, 2.0), '-') included a sign and parentheses.

Extension Modules
-----------------

- Issue #8013: time.asctime and time.ctime no longer call system
  asctime and ctime functions.  The year range for time.asctime is now
  1900 through maxint.  The range for time.ctime is the same as for
  time.localtime.  The string produced by these functions is longer
  than 24 characters when year is greater than 9999.

- Issue #6608: time.asctime is now checking struct tm fields its input
  before passing it to the system asctime.  Patch by MunSic Jeong.

- Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file
  descriptor is provided.  Patch by Pascal Chambon.

- Issue #7736: Release the GIL around calls to opendir() and closedir() in the
  posix module.  Patch by Marcin Bachry.

- Issue #4835: make PyLong_FromSocket_t() and PyLong_AsSocket_t() private to the
  socket module, and fix the width of socket descriptors to be correctly
  detected under 64-bit Windows.

- Issue #1027206: Support IDNA in gethostbyname, gethostbyname_ex, getaddrinfo
  and gethostbyaddr.  getnameinfo is now restricted to numeric addresses as
  input.

- Issue #9214: Set operations on a KeysView or ItemsView in collections now
  correctly return a set.  Patch by Eli Bendersky.

- Issue #5737: Add Solaris-specific mnemonics in the errno module.  Patch by
  Matthew Ahrens.

- Restore GIL in nis_cat in case of error. Decode NIS data to fs encoding, using
  the surrogate error handler.

- Issue #665761: ``functools.reduce()`` will no longer mask exceptions other
  than ``TypeError`` raised by the iterator argument.

- Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo.

- Issue #6915: Under Windows, os.listdir() didn't release the Global Interpreter
  Lock around all system calls.  Original patch by Ryan Kelly.

- Issue #8524: Add a detach() method to socket objects, so as to put the socket
  into the closed state without closing the underlying file descriptor.

- Issue #477863: Emit a ResourceWarning at shutdown if gc.garbage is not empty.

- Issue #6869: Fix a refcount problem in the _ctypes extension.

- Issue #5504: ctypes should now work with systems where mmap can't be
  PROT_WRITE and PROT_EXEC.

- Issue #9507: Named tuple repr will now automatically display the right name in
  a tuple subclass.

- Issue #9324: Add parameter validation to signal.signal on Windows in order to
  prevent crashes.

- Issue #9526: Remove some outdated (int) casts that were preventing the array
  module from working correctly with arrays of more than 2**31 elements.

- Fix memory leak in ssl._ssl._test_decode_cert.

- Issue #8065: Fix memory leak in readline module (from failure to free the
  result of history_get_history_state()).

- Issue #9450: Fix memory leak in readline.replace_history_item and
  readline.remove_history_item for readline version >= 5.0.

- Issue #8105: Validate file descriptor passed to mmap.mmap on Windows.

- Issue #8046: Add context manager protocol support and .closed property to mmap
  objects.

Library
-------

- Issue #7451: Improve decoding performance of JSON objects, and reduce the
  memory consumption of said decoded objects when they use the same strings as
  keys.

- Issue #1100562: Fix deep-copying of objects derived from the list and dict
  types.  Patch by Michele Orrù and Björn Lindqvist.

- Issue #9753: Fixed socket.dup, which did not always work correctly on Windows.

- Issue #9421: Made the get<type> methods consistently accept the vars and
  default arguments on all parser classes.

- Issue #7005: Fixed output of None values for RawConfigParser.write and
  ConfigParser.write.

- Issue #8990: array.fromstring() and array.tostring() get renamed to
  frombytes() and tobytes(), respectively, to avoid confusion.  Furthermore,
  array.frombytes(), array.extend() as well as the array.array() constructor now
  accept bytearray objects.  Patch by Thomas Jollans.

- Issue #808164: Fixed socket.close to avoid references to globals, to avoid
  issues when socket.close is called from a __del__ method.

- Issue #9706: ssl module provides a better error handling in various
  circumstances.

- Issue #1868: Eliminate subtle timing issues in thread-local objects by getting
  rid of the cached copy of thread-local attribute dictionary.

- Issue #1512791: In setframerate() in the wave module, non-integral frame rates
  are rounded to the nearest integer.

- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of
  falling into recursion.

- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four
  character years even if the message contains RFC822 two character years.

- Issue #8750: Fixed MutableSet's methods to correctly handle reflexive
  operations on its self, namely x -= x and x ^= x.

- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing error
  handling when accepting a new connection.

- Issue #9601: ftplib now provides a workaround for non-compliant
  implementations such as IIS shipped with Windows server 2003 returning invalid
  response codes for MKD and PWD commands.

- Issue #658749: asyncore's connect() method now correctly interprets winsock
  errors.

- Issue #9501: Fixed logging regressions in cleanup code.

- Fix functools.total_ordering() to skip methods inherited from object.

- Issue #9572: Importlib should not raise an exception if a directory it thought
  it needed to create was done concurrently by another process.

- Issue #9617: Signals received during a low-level write operation aren't
  ignored by the buffered IO layer anymore.

- Issue #843590: Make "macintosh" an alias to the "mac_roman" encoding.

- Create os.fsdecode(): decode from the filesystem encoding with surrogateescape
  error handler, or strict error handler on Windows.

- Issue #3488: Provide convenient shorthand functions ``gzip.compress`` and
  ``gzip.decompress``.  Original patch by Anand B. Pillai.

- Issue #8807: poplib.POP3_SSL class now accepts a context parameter, which is a
  ssl.SSLContext object allowing bundling SSL configuration options,
  certificates and private keys into a single (potentially long-lived)
  structure.

- Issue #8866: parameters passed to socket.getaddrinfo can now be specified as
  single keyword arguments.

- Address XXX comment in dis.py by having inspect.py prefer to reuse the dis.py
  compiler flag values over defining its own.

- Issue #9147: Added dis.code_info() which is similar to show_code() but returns
  formatted code information in a string rather than displaying on screen.

- Issue #9567: functools.update_wrapper now adds a __wrapped__ attribute
  pointing to the original callable.

- Issue #3445: functools.update_wrapper now tolerates missing attributes on
  wrapped callables.

- Issue #5867: Add abc.abstractclassmethod and abc.abstractstaticmethod.

- Issue #9605: posix.getlogin() decodes the username with file filesystem
  encoding and surrogateescape error handler. Patch written by David Watson.

- Issue #9604: posix.initgroups() encodes the username using the fileystem
  encoding and surrogateescape error handler. Patch written by David Watson.

- Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name
  using the filesystem encoding and surrogateescape error handler. Patch written
  by David Watson.

- Issue #7647: The posix module now has the ST_RDONLY and ST_NOSUID constants,
  for use with the statvfs() function.  Patch by Adam Jackson.

- Issue #8688: MANIFEST files created by distutils now include a magic comment
  indicating they are generated.  Manually maintained MANIFESTs without this
  marker will not be overwritten or removed.

- Issue #7467: when reading a file from a ZIP archive, its CRC is checked and a
  BadZipfile error is raised if it doesn't match (as used to be the case in
  Python 2.5 and earlier).

- Issue #9550: a BufferedReader could issue an additional read when the original
  read request had been satisfied, which could block indefinitely when the
  underlying raw IO channel was e.g. a socket.  Report and original patch by
  Jason V. Miller.

- Issue #3757: thread-local objects now support cyclic garbage collection.
  Thread-local objects involved in reference cycles will be deallocated timely
  by the cyclic GC, even if the underlying thread is still running.

- Issue #9452: Add read_file, read_string, and read_dict to the configparser
  API; new source attribute to exceptions.

- Issue #6231: Fix xml.etree.ElementInclude to include the tail of the current
  node.

- Issue #8047: Fix the xml.etree serializer to return bytes by default.  Use
  ``encoding="unicode"`` to generate a Unicode string.

- Issue #8280: urllib2's Request method will remove fragments in the url.  This
  is how it is supposed to work, wget and curl do the same.  Previous behavior
  was wrong.

- Issue #6683: For SMTP logins we now try all authentication methods advertised
  by the server.  Many servers are buggy and advertise authentication methods
  they do not support in reality.

- Issue #8814: function annotations (the ``__annotations__`` attribute) are now
  included in the set of attributes copied by default by functools.wraps and
  functools.update_wrapper.  Patch by Terrence Cole.

- Issue #2944: asyncore doesn't handle connection refused correctly.

- Issue #4184: Private attributes on smtpd.SMTPChannel made public and deprecate
  the private attributes. Add tests for smtpd module.

- Issue #3196: email header decoding is now forgiving if an RFC2047 encoded word
  encoded in base64 is lacking padding.

- Issue #9444: Argparse now uses the first element of prefix_chars as the option
  character for the added 'h/help' option if prefix_chars does not contain a
  '-', instead of raising an error.

- Issue #7372: Fix pstats regression when stripping paths from profile data
  generated with the profile module.

- Issue #9428: Fix running scripts with the profile/cProfile modules from the
  command line.

- Issue #7781: Fix restricting stats by entry counts in the pstats interactive
  browser.

- Issue #9209: Do not crash in the pstats interactive browser on invalid regular
  expressions.

- Update collections.OrderedDict to match the implementation in Py2.7 (based on
  lists instead of weakly referenced Link objects).

- Issue #8397: Raise an error when attempting to mix iteration and regular reads
  on a BZ2File object, rather than returning incorrect results.

- Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when
  re-initializing a buffered IO object by calling its ``__init__`` method.

- Issue #1713: Fix os.path.ismount(), which returned true for symbolic links
  across devices.

- Issue #8826: Properly load old-style "expires" attribute in http.cookies.

- Issue #1690103: Fix initial namespace for code run with trace.main().

- Issue #7395: Fix tracebacks in pstats interactive browser.

- Issue #8230: Fix Lib/test/sortperf.py.

- Issue #8620: when a cmd.Cmd() is fed input that reaches EOF without a final
  newline, it no longer truncates the last character of the last command line.

- Issue #5146: Handle UID THREAD command correctly in imaplib.

- Issue #5147: Fix the header generated for cookie files written by
  http.cookiejar.MozillaCookieJar.

- Issue #8198: In pydoc, output all help text to the correct stream when
  sys.stdout is reassigned.

- Issue #7909: Do not touch paths with the special prefixes ``\\.\`` or ``\\?\``
  in ntpath.normpath().

- Issue #1286: Allow using fileinput.FileInput as a context manager.

- Add lru_cache() decorator to the functools module.

Tools/Demos
-----------

- Fix ``Tools/scripts/checkpyc.py`` after PEP 3147.

- Issue #8867: Fix ``Tools/scripts/serve.py`` to work with files containing
  non-ASCII content.

Tests
-----

- Issue #9601: Provide a test case for ftplib.parse257.

- Issue #8857: Provide a test case for socket.getaddrinfo.

- Issue #7564: Skip test_ioctl if another process is attached to /dev/tty.

- Issue #8433: Fix test_curses failure with newer versions of ncurses.

- Issue #9496: Provide a test suite for the rlcompleter module.  Patch by
  Michele Orrù.

- Issue #8687: provide a test suite for sched.py module.

Build
-----

- Issue #1303434: Generate ZIP file containing all PDBs.

- Issue #9193: PEP 3149 is accepted.

- Issue #3101: Helper functions _add_one_to_index_C() and _add_one_to_index_F()
  become _Py_add_one_to_index_C() and _Py_add_one_to_index_F(), respectively.

- Issue #9700: define HAVE_BROKEN_POSIX_SEMAPHORES under AIX 6.x.  Patch by
  Sébastien Sablé.

- Don't run pgen twice when using make -j.


What's New in Python 3.2 Alpha 1?
=================================

*Release date: 01-Aug-2010*

Core and Builtins
-----------------

- Issue #8991: convertbuffer() rejects discontigious buffers.

- Issue #7616: Fix copying of overlapping memoryview slices with the Intel
  compiler.

- Issue #8413: structsequence now subclasses tuple.

- Issue #8271: during the decoding of an invalid UTF-8 byte sequence, only the
  start byte and the continuation byte(s) are now considered invalid, instead of
  the number of bytes specified by the start byte.  E.g.:
  '\xf1\x80AB'.decode('utf-8', 'replace') now returns u'\ufffdAB' and replaces
  with U+FFFD only the start byte ('\xf1') and the continuation byte ('\x80')
  even if '\xf1' is the start byte of a 4-bytes sequence.  Previous versions
  returned a single u'\ufffd'.

- Issue #9011: A negated imaginary literal (e.g., "-7j") now has real part -0.0
  rather than 0.0.  So "-7j" is now exactly equivalent to "-(7j)".

- Be more specific in error messages about positional arguments.

- Issue #8949: "z" format of PyArg_Parse*() functions doesn't accept bytes
  objects, as described in the documentation.

- Issue #6543: Write the traceback in the terminal encoding instead of utf-8.
  Fix the encoding of the modules filename.  Patch written by Amaury Forgeot
  d'Arc.

- Issue #9011: Remove buggy and unnecessary (in 3.x) ST->AST compilation code
  dealing with unary minus applied to a constant.  The removed code was mutating
  the ST, causing a second compilation to fail.

- Issue #850997: mbcs encoding (Windows only) handles errors argument: strict
  mode raises unicode errors.  The encoder only supports "strict" and "replace"
  error handlers, the decoder only supports "strict" and "ignore" error
  handlers.  Patch written by Mark Hammond.

- Issue #8850: Remove "w" and "w#" formats from PyArg_Parse*() functions, use
  "w*" format instead. Add tests for "w*" format.

- Issue #8592: PyArg_Parse*() functions raise a TypeError for "y", "u" and "Z"
  formats if the string contains a null byte/character.  Write unit tests for
  string formats.

- Issue #7490: To facilitate sharing of doctests between 2.x and 3.x test
  suites, the IGNORE_EXCEPTION_DETAIL directive now also ignores the module
  location of the raised exception.

- Issue #8969: On Windows, use mbcs codec in strict mode to encode and decode
  filenames and enable os.fsencode().

- Issue #9058: Remove assertions about INT_MAX in UnicodeDecodeError.

- Issue #8941: Decoding big endian UTF-32 data in UCS-2 builds could crash the
  interpreter with characters outside the Basic Multilingual Plane (higher than
  0x10000).

- Issue #8950: (See also issue #5080).  Py_ArgParse*() functions now raise
  TypeError instead of giving a DeprecationWarning when a float is parsed using
  the 'L' code (for long long).  (All other integer codes already raise
  TypeError in this case.)

- Issue #8922: Normalize the encoding name in PyUnicode_AsEncodedString() to
  enable shortcuts for upper case encoding name. Add also a shortcut for
  "iso-8859-1" in PyUnicode_AsEncodedString() and PyUnicode_Decode().

- Issue #8838: Remove codecs.charbuffer_encode() function.  The buffer protocol
  doesn't support "char buffer" anymore in Python 3.

- Issue #8339: Remove "t#" format of PyArg_Parse*() functions, use "s#" or "s*"
  instead.  codecs.charbuffer_encode() now accepts modifiable buffer objects
  like bytearray.

- Issue #8837: Remove "O?" format of PyArg_Parse*() functions.  The format is no
  used anymore and it was never documented.

- In str.format(), raise a ValueError when indexes to arguments are too large.

- Issue #2844: Make int('42', n) consistently raise ValueError for invalid
  integers n (including n = -909).

- Issue #8188: Introduce a new scheme for computing hashes of numbers (instances
  of int, float, complex, decimal.Decimal and fractions.Fraction) that makes it
  easy to maintain the invariant that hash(x) == hash(y) whenever x and y have
  equal value.

- Issue #8748: Fix two issues with comparisons between complex and integer
  objects.  (1) The comparison could incorrectly return True in some cases
  (2**53+1 == complex(2**53) == 2**53), breaking transitivity of equality.
  (2) The comparison raised an OverflowError for large integers, leading to
  unpredictable exceptions when combining integers and complex objects in sets
  or dicts.

- Issue #8766: Initialize _warnings module before importing the first module.
  Fix a crash if an empty directory called "encodings" exists in sys.path.

- Issue #8589: Decode PYTHONWARNINGS environment variable with the file system
  encoding and surrogateescape error handler instead of the locale encoding to
  be consistent with os.environ.  Add PySys_AddWarnOptionUnicode() function.

- PyObject_Dump() encodes unicode objects to utf8 with backslashreplace (instead
  of strict) error handler to escape surrogates.

- Issue #8715: Create PyUnicode_EncodeFSDefault() function: Encode a Unicode
  object to Py_FileSystemDefaultEncoding with the "surrogateescape" error
  handler, and return bytes.  If Py_FileSystemDefaultEncoding is not set, fall
  back to UTF-8.

- Enable shortcuts for common encodings in PyUnicode_AsEncodedString() for any
  error handler, not only the default error handler (strict).

- Issue #8610: Load file system codec at startup, and display a fatal error on
  failure.  Set the file system encoding to utf-8 (instead of None) if getting
  the locale encoding failed, or if nl_langinfo(CODESET) function is missing.

- PyFile_FromFd() uses PyUnicode_DecodeFSDefault() instead of
  PyUnicode_FromString() to support surrogates in the filename and use the right
  encoding.

- Issue #7507: Quote "!" in pipes.quote(); it is special to some shells.

- PyUnicode_DecodeFSDefaultAndSize() uses surrogateescape error handler.

- Issue #8419: Prevent the dict constructor from accepting non-string keyword
  arguments.

- Issue #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute
  indirectly Python signal handlers anymore because mywrite() ignores exceptions
  (KeyboardInterrupt).

- Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing
  unicode string (eg. backslashreplace).

- Issue #8485: PyUnicode_FSConverter() doesn't accept byteearray objects
  anymore, you have to convert your bytearray filenames to bytes.

- Issue #7332: Remove the 16KB stack-based buffer in
  PyMarshal_ReadLastObjectFromFile, which doesn't bring any noticeable benefit
  compared to the dynamic memory allocation fallback.  Patch by Charles-François
  Natali.

- Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is
  passed to bytes or bytearray.

- Issue #7301: Add environment variable $PYTHONWARNINGS.

- Issue #8329: Don't return the same lists from select.select when no fds are
  changed.

- Issue #8259: 1L << (2**31) no longer produces an 'outrageous shift error' on
  64-bit machines.  The shift count for either left or right shift is permitted
  to be up to sys.maxsize.

- Ensure that tokenization of identifiers is not affected by locale.

- Issue #1222585: Added LDCXXSHARED for C++ support. Patch by Arfrever.

- Raise a TypeError when trying to delete a T_STRING_INPLACE struct member.

- Issue #8211: Save/restore CFLAGS around AC_PROG_CC in configure.in, in case it
  is set.

- Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding
  is unknown.

- Issue #1583863: A str subclass can now override the __str__ method.

- Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with
  PyMemberDefs could produce an internal error; raise TypeError instead.

- Issue #7845: Rich comparison methods on the complex type now return
  NotImplemented rather than raising a TypeError when comparing with an
  incompatible type; this allows user-defined classes to implement their own
  comparisons with complex.

- Issue #3137: Don't ignore errors at startup, especially a keyboard interrupt
  (SIGINT). If an error occurs while importing the site module, the error is
  printed and Python exits. Initialize the GIL before importing the site module.

- Issue #7173: Generator finalization could invalidate sys.exc_info().

- Issue #7544: Preallocate thread memory before creating the thread to avoid a
  fatal error in low memory condition.

- Issue #7820: The parser tokenizer restores all bytes in the right if the BOM
  check fails.

- Handle errors from looking up __prepare__ correctly.

- Issue #5939: Add additional runtime checking to ensure a valid capsule in
  Modules/_ctypes/callproc.c.

- Issue #7309: Fix unchecked attribute access when converting
  UnicodeEncodeError, UnicodeDecodeError, and UnicodeTranslateError to strings.

- Issue #6902: Fix problem with built-in types format incorrectly with 0
  padding.

- Issue #7988: Fix default alignment to be right aligned for complex.__format__.
  Now it matches other numeric types.

- Issue #5988: Remove deprecated functions PyOS_ascii_formatd,
  PyOS_ascii_strtod, and PyOS_ascii_atof.  Use PyOS_double_to_string and
  PyOS_string_to_double instead.  See issue #5835 for the original deprecations.

- Issue #7385: Fix a crash in `MemoryView_FromObject` when `PyObject_GetBuffer`
  fails.  Patch by Florent Xicluna.

- Issue #7788: Fix an interpreter crash produced by deleting a list slice with
  very large step value.

- Issue #7766: Change sys.getwindowsversion() return value to a named tuple and
  add the additional members returned in an OSVERSIONINFOEX structure.  The new
  members are service_pack_major, service_pack_minor, suite_mask, and
  product_type.

- Issue #7561: Operations on empty bytearrays (such as `int(bytearray())`) could
  crash in many places because of the PyByteArray_AS_STRING() macro returning
  NULL.  The macro now returns a statically allocated empty string instead.

- Issue #6690: Optimize the bytecode for expressions such as `x in {1, 2, 3}`,
  where the right hand operand is a set of constants, by turning the set into a
  frozenset and pre-building it as a constant.  The comparison operation is made
  against the constant instead of building a new set each time it is executed (a
  similar optimization already existed which turned a list of constants into a
  pre-built tuple).  Patch and additional tests by Dave Malcolm.

- Issue #7622: Improve the split(), rsplit(), splitlines() and replace() methods
  of bytes, bytearray and unicode objects by using a common implementation based
  on stringlib's fast search.  Patch by Florent Xicluna.

- Issue #7632: Fix various str -> float conversion bugs present in 2.7 alpha 2,
  including: (1) a serious 'wrong output' bug that could occur for long (> 40
  digit) input strings, (2) a crash in dtoa.c that occurred in debug builds when
  parsing certain long numeric strings corresponding to subnormal values, (3) a
  memory leak for some values large enough to cause overflow, and (4) a number
  of flaws that could lead to incorrectly rounded results.

- The __complex__ method is now looked up on the class of instances to make it
  consistent with other special methods.

- Issue #7462: Implement the stringlib fast search algorithm for the `rfind`,
  `rindex`, `rsplit` and `rpartition` methods.  Patch by Florent Xicluna.

- Issue #7604: Deleting an unset slotted attribute did not raise an
  AttributeError.

- Issue #7534: Fix handling of IEEE specials (infinities, nans, negative zero)
  in ** operator.  The behaviour now conforms to that described in C99 Annex F.

- Issue #1811: improve accuracy and cross-platform consistency for true division
  of integers: the result of a/b is now correctly rounded for ints a and b (at
  least on IEEE 754 platforms), and in particular does not depend on the
  internal representation of an int.

- Issue #6834: replace the implementation for the 'python' and 'pythonw'
  executables on OSX.

  These executables now work properly with the arch(1) command: ``arch -ppc
  python`` will start a universal binary version of python in PPC mode (unlike
  previous releases).

- Issue #7466: Segmentation fault when the garbage collector is called in the
  middle of populating a tuple.  Patch by Florent Xicluna.

- Issue #7419: setlocale() could crash the interpreter on Windows when called
  with invalid values.

- Issue #6077: On Windows, files opened with tempfile.TemporaryFile in "wt+"
  mode would appear truncated on the first '0x1a' byte (aka. Ctrl+Z).

- Issue #7085: Fix crash when importing some extensions in a thread on MacOSX
  10.6.

- Issue #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding.

- Issue #6970: Remove redundant calls when comparing objects that don't
  implement the relevant rich comparison methods.

- Issue #7298: Fixes for range and reversed(range(...)).  Iteration over
  range(a, b, c) incorrectly gave an empty iterator when a, b and c fit in C
  long but the length of the range did not.  Also fix several cases where
  reversed(range(a, b, c)) gave wrong results, and fix a refleak for
  reversed(range(a, b, c)) with large arguments.

- Issue #7244: itertools.izip_longest() no longer ignores exceptions raised
  during the formation of an output tuple.

- Issue #3297: On wide unicode builds, do not split unicode characters into
  surrogates.

- Remove length limitation when constructing a complex number from a string.

- Issue #1087418: Boost performance of bitwise operations for longs.

- Support for AtheOS has been completely removed from the code base. It was
  disabled since Python 3.0.

- Support for several legacy threading libraries has been disabled. These
  libraries are: Mach C threads, SunOS LWP, GNU pth, Irix threads. Support code
  will be entirely removed in 3.3.

- Support for OSF* has been disabled. If nobody stands up, support will be
  removed in 3.3. See <http://bugs.python.org/issue8606>.

- Peephole constant folding had missed UNARY_POSITIVE.

- Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
  fixes the problem of some exceptions being thrown at shutdown when the
  interpreter is killed. Patch by Adam Olsen.

- Issue #7147: Remove support for compiling Python without complex number
  support.

- Issue #7120: logging: Removed import of multiprocessing which is causing crash
  in GAE.

- Issue #1754094: Improve the stack depth calculation in the compiler.  There
  should be no other effect than a small decrease in memory use.  Patch by
  Christopher Tur Lesniewski-Laas.

- Issue #7065: Fix a crash in bytes.maketrans and bytearray.maketrans when using
  byte values greater than 127.  Patch by Derk Drukker.

- Issue #1571184: The Unicode database contains properties for more characters.
  The tables for code points representing numeric values, white spaces or line
  breaks are now generated from the official Unicode Character Database files,
  and include information from the Unihan.txt file.

- Issue #7019: Raise ValueError when unmarshalling bad long data, instead of
  producing internally inconsistent Python longs.

- Issue #6990: Fix threading.local subclasses leaving old state around after a
  reference cycle GC which could be recycled by new locals.

- Issue #5460: Fix an ambiguity in the grammar.

- Issue #1766304: Improve performance of membership tests on range objects.

- Issue #6713: Improve performance of integer -> string conversions.

- Issue #6846: Fix bug where bytearray.pop() returns negative integers.

- Issue #6750: A text file opened with io.open() could duplicate its output when
  writing from multiple threads at the same time.

- Issue #6707: dir() on an uninitialized module caused a crash.

- Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.

- Issue #6573: set.union() stopped processing inputs if an instance of self
  occurred in the argument chain.

- Issue #6070: On posix platforms import no longer copies the execute bit from
  the .py file to the .pyc file if it is set.

- Issue #1616979: Added the cp720 (Arabic DOS) encoding.

- Issue #6428: Since Python 3.0, the __bool__ method must return a bool object,
  and not an int.  Fix the corresponding error message, and the documentation.

- The deprecated PyCObject has been removed.

- Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.  This fixes a
  build failure on HP-UX: int32_t and uint32_t are defined in inttypes.h instead
  of stdint.h on that platform.

- Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and the
  'surrogateescape' error handler, a string which contains unpaired surrogates.

- Issue #4856: Remove checks for win NT.

- Issue #6687: PyBytes_FromObject() no longer accepts an integer as its argument
  to construct a null-initialized bytes object.

- Issue #1023290: Add from_bytes() and to_bytes() methods to integers.  These
  methods allow the conversion of integers to bytes, and vice-versa.

- Issue #7382: Fix bug in bytes.__getnewargs__ that prevented bytes instances
  from being copied with copy.copy(), and bytes subclasses from being pickled
  properly.

- Code objects now support weak references.

- Issue #7072: isspace(0xa0) is true on Mac OS X.

- Issue #8084: PEP 370 now conforms to system conventions for framework builds
  on MacOS X. That is, "python setup.py install --user" will install into
  "~/Library/Python/2.7" instead of "~/.local".

C-API
-----

- Issue #2443: A new macro, `Py_VA_COPY`, copies the state of the