Refer consistently to issues, rewrap to 70 chars.

This commit is contained in:
Georg Brandl 2008-05-25 09:43:03 +00:00
parent 1bcf35ae39
commit 52b92cc16b

471
Misc/NEWS
View File

@ -12,73 +12,78 @@ What's new in Python 3.0b1?
Core and Builtins Core and Builtins
----------------- -----------------
- Issue #2963: fix merging oversight that disabled method cache for all types. - Issue #2963: fix merging oversight that disabled method cache for
all types.
- Issue #2964: fix a missing INCREF in instancemethod_descr_get. - Issue #2964: fix a missing INCREF in instancemethod_descr_get.
- Issue 2895: Don't crash when given bytes objects as keyword names. - Issue #2895: Don't crash when given bytes objects as keyword names.
- Issue 2798: When parsing arguments with PyArg_ParseTuple, the "s" code now - Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
allows any unicode string and returns a utf-8 encoded buffer, just like the code now allows any unicode string and returns a utf-8 encoded
"s#" code already does. The "z" code was corrected as well. buffer, just like the "s#" code already does. The "z" code was
corrected as well.
- Issue 2801: fix bug in the float.is_integer method where a ValueError - Issue #2863: generators now have a ``gen.__name__`` attribute that
equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
- Issue #2863: generators now have a ``gen.__name__`` attribute that equals ``func.func_code.co_name``. The repr() of a generator now also
``gen.gi_code.co_name``, like ``func.__name___`` that equals contains this name.
``func.func_code.co_name``. The repr() of a generator now also contains
this name.
- Issue #2831: enumerate() now has a ``start`` argument. - Issue #2831: enumerate() now has a ``start`` argument.
- Issue #2801: fix bug in the float.is_integer method where a ValueError - Issue #2801: fix bug in the float.is_integer method where a
was sometimes incorrectly raised. ValueError was sometimes incorrectly raised.
- The --with-toolbox-glue option (and the associated pymactoolbox.h) have been - The ``--with-toolbox-glue`` option (and the associated
removed. pymactoolbox.h) have been removed.
- Issue #2196: hasattr now lets exceptions which do not inherit Exception - Issue #2196: hasattr() now lets exceptions which do not inherit
(KeyboardInterrupt, and SystemExit) propagate instead of ignoring them Exception (KeyboardInterrupt, and SystemExit) propagate instead of
ignoring them.
Extension Modules Extension Modules
----------------- -----------------
- Renamed ``_winreg`` module to ``winreg``. - Renamed ``_winreg`` module to ``winreg``.
- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the platform. - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
platform.
- Support for Windows 9x has been removed from the winsound module. - Support for Windows 9x has been removed from the winsound module.
- Fixed #2870: cmathmodule.c compile error. - Issue #2870: cmathmodule.c compile error.
Library Library
------- -------
- The repr module has been renamed to reprlib. - The ``repr`` module has been renamed to ``reprlib``.
- The statvfs module has been removed. - The ``statvfs`` module has been removed.
- #1713041: fix pprint's handling of maximum depth. - Issue #1713041: fix pprint's handling of maximum depth.
- #2250: Exceptions raised during evaluation of names in rlcompleter's - Issue #2250: Exceptions raised during evaluation of names in
``Completer.complete()`` method are now caught and ignored. rlcompleter's ``Completer.complete()`` method are now caught and
ignored.
- #2659: Added ``break_on_hyphens`` option to textwrap TextWrapper class. - Patch #2659: Added ``break_on_hyphens`` option to textwrap's
``TextWrapper`` class.
- Issue #2487: change the semantics of math.ldexp(x, n) when n is too - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
large to fit in a C long. ldexp(x, n) now returns a zero (with large to fit in a C long. ldexp(x, n) now returns a zero (with
suitable sign) if n is large and negative; previously, it raised suitable sign) if n is large and negative; previously, it raised
OverflowError. OverflowError.
- The ConfigParser module has been renamed to configparser. - The ``ConfigParser`` module has been renamed to ``configparser``.
- Issue 2865: webbrowser.open() works again in a KDE environment. - Issue #2865: webbrowser.open() works again in a KDE environment.
- The multifile module has been removed. - The ``multifile`` module has been removed.
- The SocketServer module has been renamed to socketserver. - The ``SocketServer`` module has been renamed to ``socketserver``.
- Fix the __all__ setting on 'collections' to include UserList and UserString. - Fixed the ``__all__`` setting on ``collections`` to include
``UserList`` and ``UserString``.
- The sre module has been removed. - The sre module has been removed.
@ -106,11 +111,11 @@ Library
- The imputil module has been removed. - The imputil module has been removed.
- os.path.walk has been removed in favor of os.walk - os.path.walk has been removed in favor of os.walk.
- pdb gained the "until" command. - pdb gained the "until" command.
- test.test_support has been renamed test.support - The test.test_support module has been renamed to test.support.
Build Build
----- -----
@ -124,22 +129,22 @@ What's New in Python 3.0a5?
Core and Builtins Core and Builtins
----------------- -----------------
- Fix misbehaviour of PyLong_FromSsize_t on systems where sizeof(size_t) > - Fixed misbehaviour of PyLong_FromSsize_t on systems where
sizeof(long). sizeof(size_t) > sizeof(long).
- Issue #2221: Corrected a SystemError "error return without exception set", - Issue #2221: Corrected a SystemError "error return without exception
when the code executed by exec() raises an exception, and sys.stdout.flush() set", when the code executed by exec() raises an exception, and
also raises an error. sys.stdout.flush() also raises an error.
- Bug #2565: The repr() of type objects now calls them 'class', - Bug #2565: The repr() of type objects now calls them 'class', not
not 'type' - whether they are builtin types or not. 'type' - whether they are builtin types or not.
- The command line processing was converted to pass Unicode strings - The command line processing was converted to pass Unicode strings
through as unmodified as possible; as a consequence, the C API through as unmodified as possible; as a consequence, the C API
related to command line arguments was changed to use wchar_t. related to command line arguments was changed to use wchar_t.
- All backslashes in raw strings are interpreted literally. This means that - All backslashes in raw strings are interpreted literally. This
'\u' and '\U' escapes are not treated specially. means that '\u' and '\U' escapes are not treated specially.
Extension Modules Extension Modules
----------------- -----------------
@ -147,13 +152,13 @@ Extension Modules
Library Library
------- -------
- ctypes objects now support the PEP3118 buffer interface - ctypes objects now support the PEP3118 buffer interface.
- Issue #2682: ctypes callback functions now longer contain a cyclic - Issue #2682: ctypes callback functions now longer contain a cyclic
reference to themselves. reference to themselves.
- Issue #2058: Remove the buf attribute and add __slots__ to the TarInfo - Issue #2058: Remove the buf attribute and add __slots__ to the
class in order to reduce tarfile's memory usage. TarInfo class in order to reduce tarfile's memory usage.
- Bug #2606: Avoid calling .sort() on a dict_keys object. - Bug #2606: Avoid calling .sort() on a dict_keys object.
@ -167,13 +172,13 @@ Build
- Issue #1496032: On alpha, use -mieee when gcc is the compiler. - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
- "make install" is now an alias for "make altinstall", to prevent - "make install" is now an alias for "make altinstall", to prevent
accidentally overwriting a Python 2.x installation. accidentally overwriting a Python 2.x installation. Use "make
Use "make fullinstall" to force Python 3.0 to be installed as fullinstall" to force Python 3.0 to be installed as "python".
"python".
- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
gcc is used as compiler. gcc is used as compiler.
What's New in Python 3.0a4? What's New in Python 3.0a4?
=========================== ===========================
@ -195,9 +200,9 @@ Extension Modules
Library Library
------- -------
- The class distutils.commands.build_py.build_py_2to3 can be used - The class distutils.commands.build_py.build_py_2to3 can be used as a
as a build_py replacement to automatically run 2to3 on modules build_py replacement to automatically run 2to3 on modules that are
that are going to be installed. going to be installed.
- A new pickle protocol (protocol 3) is added with explicit support - A new pickle protocol (protocol 3) is added with explicit support
for bytes. This is the default protocol. It intentionally cannot for bytes. This is the default protocol. It intentionally cannot
@ -212,17 +217,20 @@ Library
more common than binary data anyway. more common than binary data anyway.
- Default to ASCII as the locale.getpreferredencoding, if the POSIX - Default to ASCII as the locale.getpreferredencoding, if the POSIX
system doesn't support CODESET and LANG isn't set or doesn't system doesn't support CODESET and LANG isn't set or doesn't allow
allow deduction of an encoding. deduction of an encoding.
- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned value. - Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
value.
- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
has been renamed tokenize and now works with bytes rather than
strings. A new detect_encoding function has been added for
determining source file encoding according to PEP-0263. Token
sequences returned by tokenize always start with an ENCODING token
which specifies the encoding used to decode the file. This token is
used to encode the output of untokenize back to bytes.
- Issue #719888: Updated tokenize to use a bytes API. generate_tokens has been
renamed tokenize and now works with bytes rather than strings. A new
detect_encoding function has been added for determining source file encoding
according to PEP-0263. Token sequences returned by tokenize always start
with an ENCODING token which specifies the encoding used to decode the file.
This token is used to encode the output of untokenize back to bytes.
What's New in Python 3.0a3? What's New in Python 3.0a3?
=========================== ===========================
@ -232,84 +240,90 @@ What's New in Python 3.0a3?
Core and Builtins Core and Builtins
----------------- -----------------
- Issue #2282: io.TextIOWrapper was not overriding seekable() from io.IOBase. - Issue #2282: io.TextIOWrapper was not overriding seekable() from
io.IOBase.
- Issue #2115: Important speedup in setting __slot__ attributes. Also - Issue #2115: Important speedup in setting __slot__ attributes. Also
prevent a possible crash: an Abstract Base Class would try to access a slot prevent a possible crash: an Abstract Base Class would try to access
on a registered virtual subclass. a slot on a registered virtual subclass.
- Fixed repr() and str() of complex numbers with infinity or nan as real or - Fixed repr() and str() of complex numbers with infinity or nan as
imaginary part. real or imaginary part.
- Clear all free list during a gc.collect() of the highest generation in order - Clear all free list during a gc.collect() of the highest generation
to allow pymalloc to free more arenas. Python may give back memory to the in order to allow pymalloc to free more arenas. Python may give back
OS earlier. memory to the OS earlier.
- Issue #2045: Fix an infinite recursion triggered when printing a subclass of - Issue #2045: Fix an infinite recursion triggered when printing a
collections.defaultdict, if its default_factory is set to a bound method. subclass of collections.defaultdict, if its default_factory is set
to a bound method.
- Fixed a minor memory leak in dictobject.c. The content of the free - Fixed a minor memory leak in dictobject.c. The content of the free
list was not freed on interpreter shutdown. list was not freed on interpreter shutdown.
- Limit free list of method and builtin function objects to 256 entries - Limit free list of method and builtin function objects to 256
each. entries each.
- Patch #1953: Added ``sys._compact_freelists()`` and the C API functions - Patch #1953: Added ``sys._compact_freelists()`` and the C API
``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList`` functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
to compact the internal free lists of pre-allocted ints and floats. to compact the internal free lists of pre-allocted ints and floats.
- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls. - Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Python expected the return type int but the fork familie returns pi_t. Python expected the return type int but the fork familie returns
pi_t.
- Issue #1678380: Fix a bug that identifies 0j and -0j when they appear - Issue #1678380: Fix a bug that identifies 0j and -0j when they
in the same code unit. appear in the same code unit.
- Issue #2025 : Add tuple.count() and tuple.index() methods to comply with - Issue #2025: Added tuple.count() and tuple.index() methods to comply
the collections.Sequence API. with the collections.Sequence API.
- Fixed multiple reinitialization of the Python interpreter. The small int - Fixed multiple reinitialization of the Python interpreter. The small
list in longobject.c has caused a seg fault during the third finalization. int list in longobject.c has caused a seg fault during the third
finalization.
- Issue #1973: bytes.fromhex('') raises SystemError - Issue #1973: bytes.fromhex('') raised SystemError.
- Issue #1771: remove cmp parameter from sorted() and list.sort() - Issue #1771: remove cmp parameter from sorted() and list.sort().
- Issue #1969: split and rsplit in bytearray are inconsistent - Issue #1969: split and rsplit in bytearray are inconsistent.
- map() and no longer accepts None for the first argument. - map() no longer accepts None for the first argument. Use zip()
Use zip() instead. instead.
- Issue #1769: Now int("- 1") is not allowed any more. - Issue #1769: Now int("- 1") is not allowed any more.
- Object/longobject.c: long(float('nan')) raises an OverflowError instead - Object/longobject.c: long(float('nan')) raises an OverflowError
of returning 0. instead of returning 0.
- Issue #1762972: __file__ points to the source file instead of the pyc/pyo - Issue #1762972: __file__ points to the source file instead of the
file if the py file exists. pyc/pyo file if the py file exists.
- Issue #1393: object_richcompare() returns NotImplemented instead of - Issue #1393: object_richcompare() returns NotImplemented instead of
False if the objects aren't equal, to give the other side a chance. False if the objects aren't equal, to give the other side a chance.
- Issue #1692: Interpreter was not displaying location of SyntaxError. - Issue #1692: Interpreter was not displaying location of SyntaxError.
- Improve some exception messages when Windows fails to load an extension - Improve some exception messages when Windows fails to load an
module. Now we get for example '%1 is not a valid Win32 application' instead extension module. Now we get for example '%1 is not a valid Win32
of 'error code 193'. Also use Unicode strings to deal with non-English application' instead of 'error code 193'. Also use Unicode strings
locales. to deal with non-English locales.
- Issue #1587: Added instancemethod wrapper for PyCFunctions. The Python C API - Issue #1587: Added instancemethod wrapper for PyCFunctions. The
has gained a new type *PyInstanceMethod_Type* and the functions Python C API has gained a new type *PyInstanceMethod_Type* and the
*PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)* and functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
*PyInstanceMethod_Function(im)*. and *PyInstanceMethod_Function(im)*.
- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed from the - Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE are now enough to from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
print the corresponding list of objects considered by the garbage collector. are now enough to print the corresponding list of objects considered
by the garbage collector.
- Issue #1573: Improper use of the keyword-only syntax makes the parser crash. - Issue #1573: Improper use of the keyword-only syntax makes the
parser crash.
- Issue #1564: The set implementation should special-case PyUnicode instead - Issue #1564: The set implementation should special-case PyUnicode
of PyString. instead of PyString.
- Patch #1031213: Decode source line in SyntaxErrors back to its - Patch #1031213: Decode source line in SyntaxErrors back to its
original source encoding. original source encoding.
@ -319,34 +333,34 @@ Core and Builtins
- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
mountpoint. mountpoint.
- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when the - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
first chunk fed to the decoder started with a BOM, but was longer than 3 the first chunk fed to the decoder started with a BOM, but was
bytes. longer than 3 bytes.
Extension Modules Extension Modules
----------------- -----------------
- Code for itertools ifilter(), imap(), and izip() moved to bultins and - Code for itertools ifilter(), imap(), and izip() moved to bultins
renamed to filter(), map(), and zip(). Also, renamed izip_longest() and renamed to filter(), map(), and zip(). Also, renamed
to zip_longest() and ifilterfalse() to filterfalse(). izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
- Issue #1762972: Readded the reload() function as imp.reload() - Issue #1762972: Readded the reload() function as imp.reload().
- Bug #2111: mmap segfaults when trying to write a block opened with PROT_READ - Bug #2111: mmap segfaults when trying to write a block opened with
PROT_READ.
- #2063: correct order of utime and stime in os.times() result on Windows.
- Issue #2063: correct order of utime and stime in os.times() result
on Windows.
Library Library
------- -------
- Weakref dictionaries now inherit from MutableMapping. - Weakref dictionaries now inherit from MutableMapping.
XXX their API still needs to be modernized (i.e. eliminate the iter methods).
- Created new UserDict class in collections module. This one inherits from and - Created new UserDict class in collections module. This one inherits
complies with the MutableMapping ABC. Also, moved UserString and UserList from and complies with the MutableMapping ABC. Also, moved
to the collections module. The MutableUserString class was removed. UserString and UserList to the collections module. The
MutableUserString class was removed.
- Removed UserDict.DictMixin. Replaced all its uses with - Removed UserDict.DictMixin. Replaced all its uses with
collections.MutableMapping. collections.MutableMapping.
@ -360,9 +374,8 @@ Library
Build Build
----- -----
- Renamed --enable-unicode configure flag to --with-wide-unicode, since - Renamed --enable-unicode configure flag to --with-wide-unicode,
Unicode strings can't be disabled anymore. since Unicode strings can't be disabled anymore.
C API C API
----- -----
@ -370,8 +383,9 @@ C API
- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
Py_TYPE and Py_REFCNT. Py_TYPE and Py_REFCNT.
- New API PyImport_ImportModuleNoBlock(), works like PyImport_ImportModule() - New API PyImport_ImportModuleNoBlock(), works like
but won't block on the import lock (returning an error instead). PyImport_ImportModule() but won't block on the import lock
(returning an error instead).
What's New in Python 3.0a2? What's New in Python 3.0a2?
@ -386,14 +400,14 @@ Core and Builtins
- str8 now has the same construction signature as bytes. - str8 now has the same construction signature as bytes.
- Comparisons between str and str8 now return False/True for ==/!=. sqlite3 - Comparisons between str and str8 now return False/True for ==/!=.
returns str8 when recreating on object from it's __conform__ value. The sqlite3 returns str8 when recreating on object from it's __conform__
struct module returns str8 for all string-related formats. This was true value. The struct module returns str8 for all string-related
before this change, but becomes more apparent thanks to string comparisons formats. This was true before this change, but becomes more
always being False. apparent thanks to string comparisons always being False.
- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode, buffer, - Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
encoding, newline)` buffer, encoding, newline)`.
- Fixed `imp.find_module()` to obey the -*- coding: -*- header. - Fixed `imp.find_module()` to obey the -*- coding: -*- header.
@ -401,55 +415,55 @@ Core and Builtins
with `Py_FileSystemDefaultEncoding` and a new API method with `Py_FileSystemDefaultEncoding` and a new API method
`PyUnicode_DecodeFSDefault(char*)` was added. `PyUnicode_DecodeFSDefault(char*)` was added.
- io.open() and _fileio.FileIO have grown a new argument closefd. A false - io.open() and _fileio.FileIO have grown a new argument closefd. A
value disables the closing of the file descriptor. false value disables the closing of the file descriptor.
- Added a new option -b to issues warnings (-bb for errors) about certain - Added a new option -b to issues warnings (-bb for errors) about
operations between bytes/buffer and str like str(b'') and comparsion. certain operations between bytes/buffer and str like str(b'') and
comparison.
- The standards streams sys.stdin, stdout and stderr may be None when the - The standards streams sys.stdin, stdout and stderr may be None when
when the C runtime library returns an invalid file descriptor for the the when the C runtime library returns an invalid file descriptor
streams (fileno(stdin) < 0). For now this happens only for Windows GUI for the streams (fileno(stdin) < 0). For now this happens only for
apps and scripts started with `pythonw.exe`. Windows GUI apps and scripts started with `pythonw.exe`.
- Added PCbuild9 directory for VS 2008. - Added PCbuild9 directory for VS 2008.
- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to work - Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
around a name clash with VS 2008 on Windows. work around a name clash with VS 2008 on Windows.
- Unbound methods are gone for good. ClassObject.method returns an ordinary - Unbound methods are gone for good. ClassObject.method returns an
function object, instance.method still returns a bound method object. ordinary function object, instance.method still returns a bound
The API of bound methods is cleaned up, too. The im_class attribute is method object. The API of bound methods is cleaned up, too. The
removed and im_func + im_self are renamed to __func__ and __self__. The im_class attribute is removed and im_func + im_self are renamed to
factory PyMethod_New takes only func and instance as argument. __func__ and __self__. The factory PyMethod_New takes only func and
instance as argument.
- intobject.h is no longer included by Python.h. The remains were moved - intobject.h is no longer included by Python.h. The remains were
to longobject.h. It still exists to define several aliases from PyInt_ moved to longobject.h. It still exists to define several aliases
to PyLong_ functions. from PyInt_ to PyLong_ functions.
- Removed sys.maxint, use sys.maxsize instead. - Removed sys.maxint, use sys.maxsize instead.
Extension Modules Extension Modules
----------------- -----------------
- The `hotshot` profiler has been removed; use `cProfile` instead. - The `hotshot` profiler has been removed; use `cProfile` instead.
Library Library
------- -------
- When loading an external file using testfile(), the passed-in encoding - When loading an external file using testfile(), the passed-in
argument was being ignored if __loader__ is defined and forcing the source to encoding argument was being ignored if __loader__ is defined and
be UTF-8. forcing the source to be UTF-8.
- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have been - The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
removed in favor of the tempfile module. been removed in favor of the tempfile module.
- Removed the 'new' module. - Removed the 'new' module.
- Removed all types from the 'types' module that are easily accessable through - Removed all types from the 'types' module that are easily accessable
builtins. through builtins.
What's New in Python 3.0a1? What's New in Python 3.0a1?
@ -469,9 +483,9 @@ Core and Builtins
- Removed the __oct__ and __hex__ special methods and added a bin() - Removed the __oct__ and __hex__ special methods and added a bin()
builtin function. builtin function.
- PEP 3127: octal literals now start with "0o". Old-style octal literals - PEP 3127: octal literals now start with "0o". Old-style octal
are invalid. There are binary literals with a prefix of "0b". literals are invalid. There are binary literals with a prefix of
This also affects int(x, 0). "0b". This also affects int(x, 0).
- None, True, False are now keywords. - None, True, False are now keywords.
@ -481,54 +495,57 @@ Core and Builtins
- Remove tuple parameter unpacking (PEP 3113). - Remove tuple parameter unpacking (PEP 3113).
- Remove the f_restricted attribute from frames. This naturally leads to the - Remove the f_restricted attribute from frames. This naturally leads
removal of PyEval_GetRestricted() and PyFrame_IsRestricted(). to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
- PEP 3132 was accepted. That means that you can do ``a, *b = range(5)`` - PEP 3132 was accepted. That means that you can do ``a, *b =
to assign 0 to a and [1, 2, 3, 4] to b. range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
- range() now returns an iterator rather than a list. Floats are not allowed. - range() now returns an iterator rather than a list. Floats are not
xrange() is no longer defined. allowed. xrange() is no longer defined.
- Patch #1660500: hide iteration variable in list comps, add set comps - Patch #1660500: hide iteration variable in list comps, add set comps
and use common code to handle compilation of iterative expressions and use common code to handle compilation of iterative expressions.
- By default, != returns the opposite of ==, unless the latter returns - By default, != returns the opposite of ==, unless the latter returns
NotImplemented. NotImplemented.
- Patch #1680961: sys.exitfunc has been removed and replaced with a private - Patch #1680961: sys.exitfunc has been removed and replaced with a
C-level API. private C-level API.
- PEP 3115: new metaclasses: the metaclass is now specified as a - PEP 3115: new metaclasses: the metaclass is now specified as a
keyword arg in the class statement, which can now use the full syntax of keyword arg in the class statement, which can now use the full
a parameter list. Also, the metaclass can implement a __prepare__ function syntax of a parameter list. Also, the metaclass can implement a
which will be called to create the dictionary for the new class namespace. __prepare__ function which will be called to create the dictionary
for the new class namespace.
- The long-deprecated argument "pend" of PyFloat_FromString() has been - The long-deprecated argument "pend" of PyFloat_FromString() has been
removed. removed.
- The dir() function has been extended to call the __dir__() method on - The dir() function has been extended to call the __dir__() method on
its argument, if it exists. If not, it will work like before. This allows its argument, if it exists. If not, it will work like before. This
customizing the output of dir() in the presence of a __getattr__(). allows customizing the output of dir() in the presence of a
__getattr__().
- Removed support for __members__ and __methods__. - Removed support for __members__ and __methods__.
- Removed indexing/slicing on BaseException. - Removed indexing/slicing on BaseException.
- input() became raw_input(): the name input() now implements the - input() became raw_input(): the name input() now implements the
functionality formerly known as raw_input(); the name raw_input() functionality formerly known as raw_input(); the name raw_input() is
is no longer defined. no longer defined.
- Classes listed in an 'except' clause must inherit from BaseException. - Classes listed in an 'except' clause must inherit from
BaseException.
- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone; - PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
and .keys(), .items(), .values() return dict views, which behave and .keys(), .items(), .values() return dict views, which behave
like sets. like sets.
- PEP 3105: print is now a function. Also (not in the PEP) the - PEP 3105: print is now a function. Also (not in the PEP) the
'softspace' attribute of files is now gone (since print() doesn't use 'softspace' attribute of files is now gone (since print() doesn't
it). A side effect of this change is that you can get incomplete use it). A side effect of this change is that you can get
output lines in interactive sessions: incomplete output lines in interactive sessions:
>>> print(42, end="") >>> print(42, end="")
42>>> 42>>>
@ -537,16 +554,16 @@ Core and Builtins
- PEP 3102: keyword-only arguments. - PEP 3102: keyword-only arguments.
- Int/Long unification is complete. The 'long' built-in type - Int/Long unification is complete. The 'long' built-in type and
and literals with trailing 'L' or 'l' have been removed. literals with trailing 'L' or 'l' have been removed. Performance
Performance may be sub-optimal (haven't really benchmarked). may be sub-optimal (haven't really benchmarked).
- 'except E, V' must now be spelled as 'except E as V' and deletes V - 'except E, V' must now be spelled as 'except E as V' and deletes V
at the end of the except clause; V must be a simple name. at the end of the except clause; V must be a simple name.
- Added function annotations per PEP 3107. - Added function annotations per PEP 3107.
- Added nonlocal declaration from PEP 3104 - Added nonlocal declaration from PEP 3104:
>>> def f(x): >>> def f(x):
... def inc(): ... def inc():
@ -585,17 +602,14 @@ Core and Builtins
- Absolute import is the default behavior for 'import foo' etc. - Absolute import is the default behavior for 'import foo' etc.
- Removed support for syntax: - Removed support for syntax: backticks (ie, `x`), <>.
backticks (ie, `x`), <>
- Removed these Python builtins: - Removed these Python builtins: apply(), callable(), coerce(),
apply(), callable(), coerce(), execfile(), file(), reduce(), reload() execfile(), file(), reduce(), reload().
- Removed these Python methods: - Removed these Python methods: {}.has_key.
{}.has_key
- Removed these opcodes: - Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT
- Remove C API support for restricted execution. - Remove C API support for restricted execution.
@ -604,8 +618,7 @@ Core and Builtins
sequences of unequal length -- it now stops after the shortest one sequences of unequal length -- it now stops after the shortest one
is exhausted. is exhausted.
- Additions: - Additions: set literals, set comprehensions, ellipsis literal.
set literals, set comprehensions, ellipsis literal.
- Added class decorators per PEP 3129. - Added class decorators per PEP 3129.
@ -613,85 +626,77 @@ Core and Builtins
Extension Modules Extension Modules
----------------- -----------------
- Remove the imageop module. Obsolete long with its unit tests becoming - Removed the imageop module. Obsolete long with its unit tests
useless from the removal of rgbimg and imgfile. becoming useless from the removal of rgbimg and imgfile.
- Removed these attributes from Python modules: - Removed these attributes from the operator module: div, idiv,
* operator module: div, idiv, __div__, __idiv__, isCallable, sequenceIncludes __div__, __idiv__, isCallable, sequenceIncludes.
* sys module: exc_clear(), exc_type, exc_value, exc_traceback
- Removed these attributes from the sys module: exc_clear(), exc_type,
exc_value, exc_traceback.
Library Library
------- -------
- Remove the compiler package. Use of the _ast module and (an eventual) - Removed the compiler package. Use of the _ast module and (an
AST -> bytecode mechanism. eventual) AST -> bytecode mechanism.
- Removed these modules: - Removed these modules: audiodev, Bastion, bsddb185, exceptions,
* audiodev, Bastion, bsddb185, exceptions, linuxaudiodev, linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
md5, MimeWriter, mimify, popen2, stringold, strop, sunaudiodev, timing, xmllib.
rexec, sets, sha, stringold, strop, sunaudiodev, timing, xmllib.
- Moved these modules to Tools/Demos: - Moved the toaiff module to Tools/Demos.
* toaiff
- Remove obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL, DEVICE, - Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile, IOCTL, jpeg, DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT. IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
- Remove obsolete functions: - Removed obsolete functions: commands.getstatus(), os.popen*().
* commands.getstatus(), os.popen*,
- Remove functions in the string module that are also string methods; - Removed functions in the string module that are also string methods;
Remove string.{letters, lowercase, uppercase}. Remove string.{letters, lowercase, uppercase}.
- Remove support for long obsolete platforms: plat-aix3, plat-irix5. - Removed support for long obsolete platforms: plat-aix3, plat-irix5.
- Remove xmlrpclib.SlowParser. It was based on xmllib. - Removed xmlrpclib.SlowParser. It was based on xmllib.
- Patch #1680961: atexit has been reimplemented in C. - Patch #1680961: atexit has been reimplemented in C.
- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE. - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
Build Build
----- -----
C API C API
----- -----
- Removed these Python slots: - Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
__coerce__, __div__, __idiv__, __rdiv__
- Removed these C APIs: - Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
PyNumber_Coerce(), PyNumber_CoerceEx(), PyMember_Get, PyMember_Set PyMember_Get, PyMember_Set.
- Removed these C slots/fields: - Removed these C slots/fields: nb_divide, nb_inplace_divide.
nb_divide, nb_inplace_divide
- Removed these macros: - Removed these macros: staticforward, statichere, PyArg_GetInt,
staticforward, statichere, PyArg_GetInt, PyArg_NoArgs, _PyObject_Del PyArg_NoArgs, _PyObject_Del.
- Removed these typedefs:
intargfunc, intintargfunc, intobjargproc, intintobjargproc,
getreadbufferproc, getwritebufferproc, getsegcountproc, getcharbufferproc,
memberlist
- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
intintobjargproc, getreadbufferproc, getwritebufferproc,
getsegcountproc, getcharbufferproc, memberlist.
Tests Tests
----- -----
- Removed test.testall as test.regrtest replaces it. - Removed test.testall as test.regrtest replaces it.
Documentation Documentation
------------- -------------
Mac Mac
--- ---
- The cfmfile was removed. - The cfmfile module was removed.
Platforms Platforms
--------- ---------
@ -700,8 +705,8 @@ Platforms
- Support for RiscOS, Irix, Tru64 was removed (alledgedly). - Support for RiscOS, Irix, Tru64 was removed (alledgedly).
Tools/Demos Tools/Demos
----------- -----------
**(For information about older versions, consult the HISTORY file.)** **(For information about older versions, consult the HISTORY file.)**