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* http://bugs.python.org/issue4715Jeffrey Yasskin2009-02-251-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch by Antoine Pitrou optimizes the bytecode for conditional branches by merging the following "POP_TOP" instruction into the conditional jump. For example, the list comprehension "[x for x in l if not x]" produced the following bytecode: 1 0 BUILD_LIST 0 3 LOAD_FAST 0 (.0) >> 6 FOR_ITER 23 (to 32) 9 STORE_FAST 1 (x) 12 LOAD_FAST 1 (x) 15 JUMP_IF_TRUE 10 (to 28) 18 POP_TOP 19 LOAD_FAST 1 (x) 22 LIST_APPEND 2 25 JUMP_ABSOLUTE 6 >> 28 POP_TOP 29 JUMP_ABSOLUTE 6 >> 32 RETURN_VALUE but after the patch it produces the following bytecode: 1 0 BUILD_LIST 0 3 LOAD_FAST 0 (.0) >> 6 FOR_ITER 18 (to 27) 9 STORE_FAST 1 (x) 12 LOAD_FAST 1 (x) 15 POP_JUMP_IF_TRUE 6 18 LOAD_FAST 1 (x) 21 LIST_APPEND 2 24 JUMP_ABSOLUTE 6 >> 27 RETURN_VALUE Notice that not only the code is shorter, but the conditional jump (POP_JUMP_IF_TRUE) jumps right to the start of the loop instead of going through the JUMP_ABSOLUTE at the end. "continue" statements are helped similarly. Furthermore, the old jump opcodes (JUMP_IF_FALSE, JUMP_IF_TRUE) have been replaced by two new opcodes: - JUMP_IF_TRUE_OR_POP, which jumps if true and pops otherwise - JUMP_IF_FALSE_OR_POP, which jumps if false and pops otherwise
* Merged revisions 67818 via svnmerge fromAntoine Pitrou2008-12-181-2/+4
| | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r67818 | antoine.pitrou | 2008-12-17 01:38:28 +0100 (mer., 17 déc. 2008) | 3 lines Issue #2183: Simplify and optimize bytecode for list comprehensions. ........
* #3021: Antoine Pitrou's Lexical exception handlersBenjamin Peterson2008-06-111-0/+8
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* Merged revisions 59541-59561 via svnmerge fromChristian Heimes2007-12-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r59544 | raymond.hettinger | 2007-12-18 01:13:45 +0100 (Tue, 18 Dec 2007) | 1 line Add more namedtuple() test cases. Neaten the code and comments. ........ r59545 | christian.heimes | 2007-12-18 04:38:03 +0100 (Tue, 18 Dec 2007) | 3 lines Fixed for #1601: IDLE not working correctly on Windows (Py30a2/IDLE30a1) Amaury's ideas works great. Should we build the Python core with WINVER=0x0500 and _WIN32_WINNT=0x0500, too? ........ r59546 | christian.heimes | 2007-12-18 10:00:13 +0100 (Tue, 18 Dec 2007) | 1 line Make it a bit easier to test Tcl/Tk and idle from a build dir. ........ r59547 | christian.heimes | 2007-12-18 10:12:10 +0100 (Tue, 18 Dec 2007) | 1 line Removed several unused files from the PCbuild9 directory. They are relics from the past. ........ r59548 | raymond.hettinger | 2007-12-18 19:26:18 +0100 (Tue, 18 Dec 2007) | 29 lines Speed-up dictionary constructor by about 10%. New opcode, STORE_MAP saves the compiler from awkward stack manipulations and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem. Old disassembly: 0 BUILD_MAP 0 3 DUP_TOP 4 LOAD_CONST 1 (1) 7 ROT_TWO 8 LOAD_CONST 2 ('x') 11 STORE_SUBSCR 12 DUP_TOP 13 LOAD_CONST 3 (2) 16 ROT_TWO 17 LOAD_CONST 4 ('y') 20 STORE_SUBSCR New disassembly: 0 BUILD_MAP 0 3 LOAD_CONST 1 (1) 6 LOAD_CONST 2 ('x') 9 STORE_MAP 10 LOAD_CONST 3 (2) 13 LOAD_CONST 4 ('y') 16 STORE_MAP ........ r59549 | thomas.heller | 2007-12-18 20:00:34 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1642: Fix segfault in ctypes when trying to delete attributes. ........ r59551 | guido.van.rossum | 2007-12-18 21:10:42 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1645 by Alberto Bertogli. Fix a comment. ........ r59553 | raymond.hettinger | 2007-12-18 22:24:09 +0100 (Tue, 18 Dec 2007) | 12 lines Give meaning to the oparg for BUILD_MAP: estimated size of the dictionary. Allows dictionaries to be pre-sized (upto 255 elements) saving time lost to re-sizes with their attendant mallocs and re-insertions. Has zero effect on small dictionaries (5 elements or fewer), a slight benefit for dicts upto 22 elements (because they had to resize once anyway), and more benefit for dicts upto 255 elements (saving multiple resizes during the build-up and reducing the number of collisions on the first insertions). Beyond 255 elements, there is no addional benefit. ........ r59554 | christian.heimes | 2007-12-18 22:56:09 +0100 (Tue, 18 Dec 2007) | 1 line Fixed #1649: IDLE error: dictionary changed size during iteration ........ r59557 | raymond.hettinger | 2007-12-18 23:21:27 +0100 (Tue, 18 Dec 2007) | 1 line Simplify and speedup _asdict() for named tuples. ........ r59558 | christian.heimes | 2007-12-19 00:22:54 +0100 (Wed, 19 Dec 2007) | 3 lines Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). The patch unifies float("inf") and repr(float("inf")) on all platforms. ........ r59559 | raymond.hettinger | 2007-12-19 00:51:15 +0100 (Wed, 19 Dec 2007) | 1 line Users demand iterable input for named tuples. The author capitulates. ........ r59560 | raymond.hettinger | 2007-12-19 01:21:06 +0100 (Wed, 19 Dec 2007) | 1 line Beef-up tests for dict literals ........ r59561 | raymond.hettinger | 2007-12-19 01:27:21 +0100 (Wed, 19 Dec 2007) | 1 line Zap a duplicate line ........
* Merging the py3k-pep3137 branch back into the py3k branch.Guido van Rossum2007-11-061-1/+1
| | | | | | | | | | | | | | No detailed change log; just check out the change log for the py3k-pep3137 branch. The most obvious changes: - str8 renamed to bytes (PyString at the C level); - bytes renamed to buffer (PyBytes at the C level); - PyString and PyUnicode are no longer compatible. I.e. we now have an immutable bytes type and a mutable bytes type. The behavior of PyString was modified quite a bit, to make it more bytes-like. Some changes are still on the to-do list.
* Remove the simple slicing API. All slicing is now done with slice objects.Thomas Wouters2007-08-301-9/+0
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* Merged revisions 56301-56442 via svnmerge fromGuido van Rossum2007-07-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/branches/p3yk ................ r56322 | kurt.kaiser | 2007-07-12 11:35:03 -0700 (Thu, 12 Jul 2007) | 2 lines Replace obscure code which was failing in py3k. ................ r56323 | kurt.kaiser | 2007-07-12 11:44:12 -0700 (Thu, 12 Jul 2007) | 3 lines 1. Remove new division option 2. Update IDLE version to 3.0x ................ r56327 | kurt.kaiser | 2007-07-12 12:20:20 -0700 (Thu, 12 Jul 2007) | 5 lines Fix another instance of this defect in Tkinter, and one in IDLE. Patch 1724999 by Ali Gholami Rudi -- avoid complaints about dict size change during iter in destroy call. ................ r56339 | georg.brandl | 2007-07-13 03:07:25 -0700 (Fri, 13 Jul 2007) | 2 lines Fix #1753310: regrtest -x doesn't work anymore ................ r56361 | kurt.kaiser | 2007-07-13 18:25:24 -0700 (Fri, 13 Jul 2007) | 2 lines convert a map() iterator to a list to get this working. ................ r56362 | kurt.kaiser | 2007-07-13 18:53:45 -0700 (Fri, 13 Jul 2007) | 2 lines Was modifying dict during iteration. ................ r56376 | collin.winter | 2007-07-14 11:56:19 -0700 (Sat, 14 Jul 2007) | 1 line Add an example of class decorators to test_grammar. ................ r56377 | collin.winter | 2007-07-14 12:00:17 -0700 (Sat, 14 Jul 2007) | 1 line Add a basic example of dictcomps to test_grammar. ................ r56413 | neal.norwitz | 2007-07-17 00:21:18 -0700 (Tue, 17 Jul 2007) | 149 lines Merged revisions 56202-56412 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r56204 | ronald.oussoren | 2007-07-08 23:02:21 -0700 (Sun, 08 Jul 2007) | 2 lines Patch 1693258: Fix for duplicate "preferences" menu-OS X ........ r56207 | ronald.oussoren | 2007-07-09 01:41:15 -0700 (Mon, 09 Jul 2007) | 4 lines Patch 1673122: be explicit about which libtool to use, to avoid name clashes when a users install GNU libtool early in his PATH ........ r56280 | georg.brandl | 2007-07-11 12:41:49 -0700 (Wed, 11 Jul 2007) | 2 lines Fix #1752132: wrong comment in opcode description. ........ r56293 | georg.brandl | 2007-07-12 01:05:45 -0700 (Thu, 12 Jul 2007) | 3 lines Patch #1752270, #1750931: complain if urllib2 add_handler called without handler. ........ r56296 | georg.brandl | 2007-07-12 01:11:29 -0700 (Thu, 12 Jul 2007) | 2 lines Patch #1739696: use code.co_code only if really necessary ........ r56298 | georg.brandl | 2007-07-12 01:38:00 -0700 (Thu, 12 Jul 2007) | 3 lines Patch #1673759: add a missing overflow check when formatting floats with %G. ........ r56302 | georg.brandl | 2007-07-12 02:06:41 -0700 (Thu, 12 Jul 2007) | 2 lines Patch #1731659: improve time.strptime docs. ........ r56304 | georg.brandl | 2007-07-12 02:24:04 -0700 (Thu, 12 Jul 2007) | 2 lines Patch #1731169: clean up expected skips list. ........ r56306 | georg.brandl | 2007-07-12 02:37:49 -0700 (Thu, 12 Jul 2007) | 3 lines Bug #1637365: add subsection about "__name__ == __main__" to the Python tutorial. ........ r56308 | georg.brandl | 2007-07-12 02:59:22 -0700 (Thu, 12 Jul 2007) | 5 lines Patch #1675424: Added tests for uncovered code in the zipfile module. The KeyError raised by Zipfile.getinfo for nonexistent names now has a descriptive message. ........ r56340 | facundo.batista | 2007-07-13 03:43:44 -0700 (Fri, 13 Jul 2007) | 6 lines Added tests for basic behavior of DateTime, Binary, and Fault classes and the escape function. Check that marshalling recursive sequences & dicts raises TypeError. Check that marshalling out-of-range ints raises OverflowError [Alan McIntyre - GSoC] ........ r56345 | raymond.hettinger | 2007-07-13 05:09:41 -0700 (Fri, 13 Jul 2007) | 1 line Correct the docs for takewhile(). Improve the recipe for nth(). Should be backported ........ r56348 | thomas.heller | 2007-07-13 06:59:39 -0700 (Fri, 13 Jul 2007) | 4 lines Repair COMError. Since exceptions are new style classes now, setting the methods and docstring after the type creation does not work, they must be in the dictionary before creating the type. ........ r56349 | thomas.heller | 2007-07-13 07:18:06 -0700 (Fri, 13 Jul 2007) | 1 line Add tests for _ctypes.COMError. ........ r56350 | thomas.heller | 2007-07-13 09:50:43 -0700 (Fri, 13 Jul 2007) | 4 lines Do not try to load the GLUT library in the ctypes tests. This test adds little value, but has a large problem on OS X, as explained in SF# 1581906. ........ r56352 | thomas.heller | 2007-07-13 10:12:23 -0700 (Fri, 13 Jul 2007) | 3 lines Fix for SF# 1701409: segfault in c_char_p of ctypes. The repr output of c_char_p and c_wchar_p has changed as a sideeffect. ........ r56355 | thomas.heller | 2007-07-13 10:46:54 -0700 (Fri, 13 Jul 2007) | 3 lines Fix for SF# 1649098: avoid zero-sized array declaration in structure. ........ r56357 | thomas.heller | 2007-07-13 12:51:55 -0700 (Fri, 13 Jul 2007) | 3 lines PyType_stgdict() returns a borrowed reference which must not be Py_DECREF'd. ........ r56360 | barry.warsaw | 2007-07-13 15:12:58 -0700 (Fri, 13 Jul 2007) | 10 lines In response to this SF bug: [ 1752723 ] email.message_from_string: initial line gets discarded I added a test to assert that when the first line of text passed to message_from_string() contains a leading space, the message ends up with the appropriate FirstHeaderLineIsContinuationDefect on its defects list. The bug is invalid. ........ r56364 | georg.brandl | 2007-07-14 10:12:23 -0700 (Sat, 14 Jul 2007) | 2 lines Bug #1753406: missing \versionadded for subprocess.check_call. ........ r56366 | georg.brandl | 2007-07-14 10:32:41 -0700 (Sat, 14 Jul 2007) | 2 lines Clarify webbrowser.open description. ........ r56380 | andrew.kuchling | 2007-07-14 13:58:21 -0700 (Sat, 14 Jul 2007) | 1 line Typo fix ........ r56382 | andrew.kuchling | 2007-07-14 14:56:19 -0700 (Sat, 14 Jul 2007) | 7 lines Avoid exception if there's a stray directory inside a Maildir folder. The Maildir specification doesn't seem to say anything about this situation, and it can happen if you're keeping a Maildir mailbox in Subversion (.svn directories) or some similar system. The patch just ignores directories in the cur/, new/, tmp/ folders. ........ r56392 | facundo.batista | 2007-07-14 15:41:45 -0700 (Sat, 14 Jul 2007) | 6 lines First version. Includes tests for helper functions: read, write, _exception, readwrite, closeall, compact_traceback; and for classes dispatcher, dispatcher_with_send, and file_wrapper. [Alan McIntyre - GSoC] ........ r56399 | facundo.batista | 2007-07-15 13:30:39 -0700 (Sun, 15 Jul 2007) | 5 lines Changed the used port and commented out some tests that uses a non documented function that appers to uses resources not present in Windows. ........ r56412 | facundo.batista | 2007-07-16 19:19:39 -0700 (Mon, 16 Jul 2007) | 6 lines Prevent asyncore.dispatcher tests from hanging by adding loop counters to server & client, and by adding asyncore.close_all calls in tearDown. Also choose correct expected logging results based on the value of __debug__ [Alan McIntyre - GSoC] ........ ................ r56442 | guido.van.rossum | 2007-07-18 10:26:38 -0700 (Wed, 18 Jul 2007) | 14 lines Merged revisions 56413-56441 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r56439 | georg.brandl | 2007-07-17 23:37:55 -0700 (Tue, 17 Jul 2007) | 2 lines Use "Unix" as platform name, not "UNIX". ........ r56441 | guido.van.rossum | 2007-07-18 10:19:14 -0700 (Wed, 18 Jul 2007) | 3 lines SF patch# 1755885 by Kurt Kaiser: show location of Unicode escape errors. (Slightly tweaked for style and refcounts.) ........ ................
* Merged revisions 55225-55227,55229-55269 via svnmerge fromGuido van Rossum2007-05-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/branches/p3yk ................ r55238 | guido.van.rossum | 2007-05-10 16:46:05 -0700 (Thu, 10 May 2007) | 9 lines Merged revisions 55227 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r55227 | guido.van.rossum | 2007-05-10 10:20:15 -0700 (Thu, 10 May 2007) | 2 lines Fix a bug in test_c_api() that caused a negative refcount. ........ ................ r55246 | neal.norwitz | 2007-05-11 00:01:52 -0700 (Fri, 11 May 2007) | 1 line Remove commands.getstatus() it is obsolete. ................ r55248 | neal.norwitz | 2007-05-11 00:29:05 -0700 (Fri, 11 May 2007) | 2 lines Remove bsddb185 support. ................ r55249 | neal.norwitz | 2007-05-11 00:29:50 -0700 (Fri, 11 May 2007) | 1 line Remove bsddb185 module too ................ r55250 | neal.norwitz | 2007-05-11 00:32:13 -0700 (Fri, 11 May 2007) | 1 line bsddb185: Gotta remove from the file checked in, not Setup ................ r55251 | neal.norwitz | 2007-05-11 00:53:26 -0700 (Fri, 11 May 2007) | 1 line Remove obsolete IRIX modules (as much as I could find, there is probably more) ................ r55252 | neal.norwitz | 2007-05-11 00:55:35 -0700 (Fri, 11 May 2007) | 1 line Remove SGI turd. ................ r55254 | georg.brandl | 2007-05-11 03:11:01 -0700 (Fri, 11 May 2007) | 2 lines Add a case for set comprehensions to the "cannot assign to" switch. ................ r55255 | georg.brandl | 2007-05-11 03:11:25 -0700 (Fri, 11 May 2007) | 2 lines Fix wrong imports. ................ r55261 | georg.brandl | 2007-05-11 07:37:48 -0700 (Fri, 11 May 2007) | 2 lines Remove removed tex files. ................ r55262 | georg.brandl | 2007-05-11 08:28:41 -0700 (Fri, 11 May 2007) | 2 lines Commit PEP 3132 implementation. ................ r55264 | georg.brandl | 2007-05-11 08:50:19 -0700 (Fri, 11 May 2007) | 2 lines Check in the inevitable AST version number and format Py_ssize_t with %zd. ................ r55265 | neal.norwitz | 2007-05-11 09:12:22 -0700 (Fri, 11 May 2007) | 1 line Remove mention of os.popen* and popen2.* since these will be removed. ................ r55266 | neal.norwitz | 2007-05-11 09:19:57 -0700 (Fri, 11 May 2007) | 1 line Get doc to build again (almost, the doc is fine) ................ r55267 | neal.norwitz | 2007-05-11 09:21:02 -0700 (Fri, 11 May 2007) | 1 line Really get doc to build (remove use of string module) ................ r55269 | neal.norwitz | 2007-05-11 09:29:43 -0700 (Fri, 11 May 2007) | 1 line Add some notes to cleanup later ................
* Hide list comp variables and support set comprehensionsNick Coghlan2007-04-151-0/+1
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* Implement PEP 3115 -- new metaclass syntax and semantics.Guido van Rossum2007-03-181-5/+5
| | | | | | | The compiler package hasn't been updated yet; test_compiler.py fails. Otherwise all tests seem to be passing now. There are no occurrences of __metaclass__ left in the standard library. Docs have not been updated.
* Bytes literal.Thomas Wouters2007-02-231-1/+1
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* * Remove PRINT_ITEM(_TO), PRINT_NEWLINE(_TO) opcodes.Georg Brandl2007-02-091-4/+1
| | | | | | | * Fix some docstrings and one Print -> print. * Fix test_{class,code,descrtut,dis,extcall,parser,popen,pkg,subprocess,syntax,traceback}. These were the ones that generated code with a print statement. In most remaining failing tests there's an issue with the soft space.
* Patch #1550800: make exec a function.Georg Brandl2006-09-061-1/+1
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* SF patch 1547796 by Georg Brandl -- set literals.Guido van Rossum2006-08-281-5/+6
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* Remove the UNARY_CONVERT opcode (was used for backticks). Also bumped up theBrett Cannon2006-08-251-1/+0
| | | | import MAGIC number.
* INPLACE_DIVIDE is no longer necessary (INPLACE_TRUE_DIVIDE is used).Neal Norwitz2006-03-171-1/+1
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* Get rid of last vestiges of BINARY_DIVIDE.Neal Norwitz2006-03-161-1/+1
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* PEP 343 -- the with-statement.Guido van Rossum2006-02-271-2/+1
| | | | | | | | | | | | | This was started by Mike Bland and completed by Guido (with help from Neal). This still needs a __future__ statement added; Thomas is working on Michael's patch for that aspect. There's a small amount of code cleanup and refactoring in ast.c, compile.c and ceval.c (I fixed the lltrace behavior when EXT_POP is used -- however I had to make lltrace a static global).
* Install two code generation optimizations that depend on NOP.Raymond Hettinger2004-06-211-0/+1
| | | | Reduces the cost of "not" to almost zero.
* SF patch #910929: Optimize list comprehensionsRaymond Hettinger2004-03-071-0/+1
| | | | | Add a new opcode, LIST_APPEND, and apply it to the code generation for list comprehensions. Reduces the per-loop overhead by about a third.
* Revert the previous enhancement to the bytecode optimizer.Raymond Hettinger2003-04-241-2/+0
| | | | The additional code complexity and new NOP opcode were not worth it.
* Improved the bytecode optimizer.Raymond Hettinger2003-04-221-0/+2
| | | | | | | | | | | | | | * Can now test for basic blocks. * Optimize inverted comparisions. * Optimize unary_not followed by a conditional jump. * Added a new opcode, NOP, to keep code size constant. * Applied NOP to previous transformations where appropriate. Note, the NOP would not be necessary if other functions were added to re-target jump addresses and update the co_lnotab mapping. That would yield slightly faster and cleaner bytecode at the expense of optimizer simplicity and of keeping it decoupled from the line-numbering structure.
* Further SET_LINENO reomval fixes. See comments in patch #587933.Michael W. Hudson2002-08-301-3/+0
| | | | | | | | | | Use a slightly different strategy to determine when not to call the line trace function. This removes the need for the RETURN_NONE opcode, so that's gone again. Update docs and comments to match. Thanks to Neal and Armin! Also add a test suite. This should have come with the original patch...
* This is my patchMichael W. Hudson2002-08-151-2/+3
| | | | | | | | [ 587993 ] SET_LINENO killer Remove SET_LINENO. Tracing is now supported by inspecting co_lnotab. Many sundry changes to document and adapt to this change.
* The opcode FOR_LOOP no longer exists.Guido van Rossum2002-06-131-1/+0
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* Patch #494783: Rename cmp_op enumerators.Martin v. Löwis2002-01-011-3/+3
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* Implement PEP 238 in its (almost) full glory.Guido van Rossum2001-08-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | This introduces: - A new operator // that means floor division (the kind of division where 1/2 is 0). - The "future division" statement ("from __future__ import division) which changes the meaning of the / operator to implement "true division" (where 1/2 is 0.5). - New overloadable operators __truediv__ and __floordiv__. - New slots in the PyNumberMethods struct for true and floor division, new abstract APIs for them, new opcodes, and so on. I emphasize that without the future division statement, the semantics of / will remain unchanged until Python 3.0. Not yet implemented are warnings (default off) when / is used with int or long arguments. This has been on display since 7/31 as SF patch #443474. Flames to /dev/null.
* Merging the gen-branch into the main line, at Guido's direction. Yay!Tim Peters2001-06-181-0/+1
| | | | | Bugfix candidate in inspect.py: it was referencing "self" outside of a method.
* Iterators phase 1. This comprises:Guido van Rossum2001-04-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | new slot tp_iter in type object, plus new flag Py_TPFLAGS_HAVE_ITER new C API PyObject_GetIter(), calls tp_iter new builtin iter(), with two forms: iter(obj), and iter(function, sentinel) new internal object types iterobject and calliterobject new exception StopIteration new opcodes for "for" loops, GET_ITER and FOR_ITER (also supported by dis.py) new magic number for .pyc files new special method for instances: __iter__() returns an iterator iteration over dictionaries: "for x in dict" iterates over the keys iteration over files: "for x in file" iterates over lines TODO: documentation test suite decide whether to use a different way to spell iter(function, sentinal) decide whether "for key in dict" is a good idea use iterators in map/filter/reduce, min/max, and elsewhere (in/not in?) speed tuning (make next() a slot tp_next???)
* Allow 'continue' inside 'try' clauseJeremy Hylton2001-02-011-0/+1
| | | | SF patch 102989 by Thomas Wouters
* PEP 227 implementationJeremy Hylton2001-01-251-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The majority of the changes are in the compiler. The mainloop changes primarily to implement the new opcodes and to pass a function's closure to eval_code2(). Frames and functions got new slots to hold the closure. Include/compile.h Add co_freevars and co_cellvars slots to code objects. Update PyCode_New() to take freevars and cellvars as arguments Include/funcobject.h Add func_closure slot to function objects. Add GetClosure()/SetClosure() functions (and corresponding macros) for getting at the closure. Include/frameobject.h PyFrame_New() now takes a closure. Include/opcode.h Add four new opcodes: MAKE_CLOSURE, LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF. Remove comment about old requirement for opcodes to fit in 7 bits. compile.c Implement changes to code objects for co_freevars and co_cellvars. Modify symbol table to use st_cur_name (string object for the name of the current scope) and st_cur_children (list of nested blocks). Also define st_nested, which might more properly be called st_cur_nested. Add several DEF_XXX flags to track def-use information for free variables. New or modified functions of note: com_make_closure(struct compiling *, PyCodeObject *) Emit LOAD_CLOSURE opcodes as needed to pass cells for free variables into nested scope. com_addop_varname(struct compiling *, int, char *) Emits opcodes for LOAD_DEREF and STORE_DEREF. get_ref_type(struct compiling *, char *name) Return NAME_CLOSURE if ref type is FREE or CELL symtable_load_symbols(struct compiling *) Decides what variables are cell or free based on def-use info. Can now raise SyntaxError if nested scopes are mixed with exec or from blah import *. make_scope_info(PyObject *, PyObject *, int, int) Helper functions for symtable scope stack. symtable_update_free_vars(struct symtable *) After a code block has been analyzed, it must check each of its children for free variables that are not defined in the block. If a variable is free in a child and not defined in the parent, then it is defined by block the enclosing the current one or it is a global. This does the right logic. symtable_add_use() is now a macro for symtable_add_def() symtable_assign(struct symtable *, node *) Use goto instead of for (;;) Fixed bug in symtable where name of keyword argument in function call was treated as assignment in the scope of the call site. Ex: def f(): g(a=2) # a was considered a local of f ceval.c eval_code2() now take one more argument, a closure. Implement LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF, MAKE_CLOSURE> Also: When name error occurs for global variable, report that the name was global in the error mesage. Objects/frameobject.c Initialize f_closure to be a tuple containing space for cellvars and freevars. f_closure is NULL if neither are present. Objects/funcobject.c Add support for func_closure. Python/import.c Change the magic number. Python/marshal.c Track changes to code objects.
* Rich comparisons: ensure that LT == Py_LT, etc.Guido van Rossum2001-01-171-1/+2
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* REMOVED all CWI, CNRI and BeOpen copyright markings.Guido van Rossum2000-09-011-9/+0
| | | | This should match the situation in the 1.6b1 tree.
* The real suport for augmented assignment: new opcodes, new PyNumber andThomas Wouters2000-08-241-3/+13
| | | | PySequence methods and functions, new tokens.
* Charles G. Waldman <cgw@fnal.gov>:Fred Drake2000-08-241-0/+3
| | | | | | | | | Add the EXTENDED_ARG opcode to the virtual machine, allowing 32-bit arguments to opcodes instead of being forced to stick to the 16-bit limit. This is especially useful for machine-generated code, which can be too long for the SET_LINENO parameter to fit into 16 bits. This closes the implementation portion of SourceForge patch #100893.
* PEP 214, Extended print Statement, has been accepted by the BDFL.Barry Warsaw2000-08-211-0/+2
| | | | | This adds the two new opcodes to support this feature: PRINT_ITEM_TO, PRINT_NEWLINE_TO.
* Apply SF patch #101135, adding 'import module as m' and 'from module importThomas Wouters2000-08-171-1/+1
| | | | | | | | name as n'. By doing some twists and turns, "as" is not a reserved word. There is a slight change in semantics for 'from module import name' (it will now honour the 'global' keyword) but only in cases that are explicitly undocumented.
* Merge UNPACK_LIST and UNPACK_TUPLE into a single UNPACK_SEQUENCE, since theyThomas Wouters2000-08-111-2/+2
| | | | | | | did the same anyway. I'm not sure what to do with Tools/compiler/compiler/* -- that isn't part of distutils, is it ? Should it try to be compatible with old bytecode version ?
* Change copyright notice - 2nd try.Guido van Rossum2000-06-301-6/+0
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* Change copyright notice.Guido van Rossum2000-06-301-22/+7
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* remove reference to CALL_FUNCTION_STAR in commentJeremy Hylton2000-03-291-1/+1
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* slightly modified version of Greg Ewing's extended call syntax patchJeremy Hylton2000-03-281-0/+7
| | | | | | | | | | | | | | | | | | | | | | | executive summary: Instead of typing 'apply(f, args, kwargs)' you can type 'f(*arg, **kwargs)'. Some file-by-file details follow. Grammar/Grammar: simplify varargslist, replacing '*' '*' with '**' add * & ** options to arglist Include/opcode.h & Lib/dis.py: define three new opcodes CALL_FUNCTION_VAR CALL_FUNCTION_KW CALL_FUNCTION_VAR_KW Python/ceval.c: extend TypeError "keyword parameter redefined" message to include the name of the offending keyword reindent CALL_FUNCTION using four spaces add handling of sequences and dictionaries using extend calls fix function import_from to use PyErr_Format
* Get rid of some obsolete opcodes.Guido van Rossum1998-07-071-5/+0
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* Get rid of obsolete ACCESS_MODE opcode.Guido van Rossum1997-05-091-1/+0
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* New permission notice, includes CNRI.Guido van Rossum1996-10-251-13/+20
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* Added BUILD_SLICE opcode.Guido van Rossum1996-07-301-0/+1
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* changes for ** (power) operatorGuido van Rossum1996-01-121-0/+2
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* keyword arguments and faster function callsGuido van Rossum1995-07-181-6/+4
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* new opcodes RAISE_VARARGS, CALL_FUNCTIONGuido van Rossum1995-07-071-0/+8
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* Added 1995 copyright.Guido van Rossum1995-01-041-2/+2
| | | | | | object.h: made sizes and refcnts signed ints. stringobject.h: make getstrsize() signed int. methodobject.h: add METH_VARARGS and METH_FREENAME flag bit definitions.
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