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author | Tim Peters <tim.peters@gmail.com> | 2001-09-02 03:40:59 (GMT) |
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committer | Tim Peters <tim.peters@gmail.com> | 2001-09-02 03:40:59 (GMT) |
commit | bdee63fff332803bedbbb52aba7b24dc7dccfdbc (patch) | |
tree | a602b3c7811d551f0eb6c8b54fb58c5be34641b6 /Misc | |
parent | 6114297c87a4f674af662567614688443f9c6d95 (diff) | |
download | cpython-bdee63fff332803bedbbb52aba7b24dc7dccfdbc.zip cpython-bdee63fff332803bedbbb52aba7b24dc7dccfdbc.tar.gz cpython-bdee63fff332803bedbbb52aba7b24dc7dccfdbc.tar.bz2 |
Start items w/ "-" instead of "+" (consistency w/ earlier versions).
Stephen Hansen reported via email that he didn't finish the port to
Borland C, so remove the old item saying it worked and add a new item
saying what I know; I've asked Stephen for more details.
Diffstat (limited to 'Misc')
-rw-r--r-- | Misc/NEWS | 35 |
1 files changed, 17 insertions, 18 deletions
@@ -3,13 +3,13 @@ What's New in Python 2.2a3? Core -+ Overflowing operations on plain ints now return a long int rather +- Overflowing operations on plain ints now return a long int rather than raising OverflowError. This is a partial implementation of PEP 237. You can use -Wdefault::OverflowWarning to enable a warning for this situation, and -Werror::OverflowWarning to revert to the old OverflowError exception. -+ A new command line option, -D<arg>, is added to control run-time +- A new command line option, -D<arg>, is added to control run-time warnings for the use of classic division. (See PEP 238.) Possible values are -Dold, -Dwarn, and -Dnew. The default is -Dold, meaning the / operator has its classic meaning and no warnings are issued. @@ -20,7 +20,7 @@ Core gives the __main__ module new division, and warns about classic division everywhere else. -+ Many built-in types can now be subclassed. This applies to int, +- Many built-in types can now be subclassed. This applies to int, long, float, str, unicode, and tuple. (The types complex, list and dictionary can also be subclassed; this was introduced earlier.) Note that restrictions apply when subclassing immutable built-in @@ -30,36 +30,36 @@ Core (as implemented by the base class) of an immutable subclass instance once it is created. -+ A new built-in type, super, has been added. This facilitates making +- A new built-in type, super, has been added. This facilitates making "cooperative super calls" in a multiple inheritance setting. For an explanation, see http://www.python.org/2.2/descrintro.html#cooperation -+ A new built-in type, getset, has been added. This enables the +- A new built-in type, getset, has been added. This enables the creation of "computed attributes". Such attributes are implemented by getter and setter functions (or only one of these for read-only or write-only attributes), without the need to override __getattr__. See http://www.python.org/2.2/descrintro.html#getset -+ The syntax of floating-point and imaginary literals has been +- The syntax of floating-point and imaginary literals has been liberalized, to allow leading zeroes. Examples of literals now legal that were SyntaxErrors before: 00.0 0e3 0100j 07.5 00000000000000000008. -+ An old tokenizer bug allowed floating point literals with an incomplete +- An old tokenizer bug allowed floating point literals with an incomplete exponent, such as 1e and 3.1e-. Such literals now raise SyntaxError. Library -+ A new function, imp.lock_held(), returns 1 when the import lock is +- A new function, imp.lock_held(), returns 1 when the import lock is currently held. See the docs for the imp module. -+ pickle, cPickle and marshal on 32-bit platforms can now correctly read +- pickle, cPickle and marshal on 32-bit platforms can now correctly read dumps containing ints written on platforms where Python ints are 8 bytes. When read on a box where Python ints are 4 bytes, such values are converted to Python longs. -+ In restricted execution mode (using the rexec module), unmarshalling +- In restricted execution mode (using the rexec module), unmarshalling code objects is no longer allowed. This plugs a security hole. Tools @@ -68,7 +68,7 @@ Build API -+ The GC API has been changed. Extensions that use the old API will still +- The GC API has been changed. Extensions that use the old API will still compile but will not participate in GC. To upgrade an extension module: @@ -84,18 +84,22 @@ API - remove calls to PyObject_AS_GC and PyObject_FROM_GC -+ Two new functions: PyString_FromFormat() and PyString_FromFormatV(). +- Two new functions: PyString_FromFormat() and PyString_FromFormatV(). These can be used safely to construct string objects from a sprintf-style format string (similar to the format string supported by PyErr_Format()). New platforms +- Patches from Stephen Hansen for the Borland C compiler (under Windows) + are reported to yield a clean compile, but a Python that doesn't yet + run correctly. Volunteers? + Tests Windows -+ The w9xpopen hack is now used on Windows NT and 2000 too when COMPSPEC +- The w9xpopen hack is now used on Windows NT and 2000 too when COMPSPEC points to command.com (patch from Brian Quinlan). @@ -436,11 +440,6 @@ Tests pprint.isreadable() return sensible results. Also verifies that simple cases produce correct output. -New platforms - -- Python should compile and run out of the box using the Borland C - compiler (under Windows), thanks to Stephen Hansen. - C API - Removed the unused last_is_sticky argument from the internal |