diff options
Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/3.0.rst | 71 |
1 files changed, 66 insertions, 5 deletions
diff --git a/Doc/whatsnew/3.0.rst b/Doc/whatsnew/3.0.rst index 6026a0f..859c64b 100644 --- a/Doc/whatsnew/3.0.rst +++ b/Doc/whatsnew/3.0.rst @@ -182,19 +182,31 @@ Strings and Bytes PEP 3101: A New Approach to String Formatting ============================================= -XXX +.. XXX expand this +* A new system for built-in string formatting operations replaces + the ``%`` string formatting operator. -PEP 3106: Revamping ``.keys()``, ``.items()`` and ``.values()`` -=============================================================== -XXX +PEP 3106: Revamping dict ``.keys()``, ``.items()`` and ``.values()`` +==================================================================== + +.. XXX expand this + +* The ``.iterkeys()``, ``.itervalues()`` and ``.iteritems()`` methods + have been removed. + +* ``.keys()``, ``.values()`` and ``.items()`` return objects with set + behavior that reference the underlying dict. PEP 3107: Function Annotations ============================== -XXX +.. XXX expand this + +* A standardized way of annotating a function's parameters and return + values. Exception Stuff @@ -216,6 +228,11 @@ Exception Stuff * PEP 3134: Exception chaining. (The ``__context__`` feature from the PEP hasn't been implemented yet in 3.0a1.) +* A few exception messages are improved when Windows fails to load an + extension module. For example, ``error code 193`` is now ``%1 is not + a valid Win32 application``. Strings now deal with non-English + locales. + New Class and Metaclass Stuff ============================= @@ -242,8 +259,13 @@ language and built-in functions. * Removed ``<>`` (use ``!=`` instead). +* ``!=`` now returns the opposite of ``==``, unless ``==`` returns + ``NotImplemented``. + * ``as`` and ``with`` are keywords. +* ``True``, ``False``, and ``None`` are keywords. + * PEP 237: ``long`` renamed to ``int``. That is, there is only one built-in integral type, named ``int``; but it behaves like the old ``long`` type, with the exception that the literal suffix ``L`` is @@ -312,6 +334,23 @@ language and built-in functions. * ``exec`` is now a function. +* There is a new free format floating point representation, which is + based on "Floating-Point Printer Sample Code", by Robert G. Burger. + ``repr(11./5)`` now returns ``2.2`` instead of ``2.2000000000000002``. + +* The ``__oct__()`` and ``__hex__()`` special methods are removed -- + ``oct()`` and ``hex()`` use ``__index__()`` now to convert the + argument to an integer. + +* There is now a ``bin()`` builtin function. + +* Support is removed for ``__members__`` and ``__methods__``. + +* ``nb_nonzero`` is now ``nb_bool`` and ``__nonzero__`` is now + ``__bool__``. + +* Removed ``sys.maxint``. Use ``sys.maxsize``. + .. ====================================================================== @@ -341,6 +380,18 @@ through the Subversion logs for all the details. * The ``cPickle`` module is gone. Use ``pickle`` instead. Eventually we'll have a transparent accelerator module. +* The ``imageop`` module is gone. + +* The ``audiodev``, ``Bastion``, ``bsddb185``, ``exceptions``, + ``linuxaudiodev``, ``md5``, ``MimeWriter``, ``mimify``, ``popen2``, + ``rexec``, ``sets``, ``sha``, ``stringold``, ``strop``, ``sunaudiodev``, + ``timing``, and ``xmllib`` modules are gone. + +* The ``new`` module is gone. + +* The methods ``os.tmpnam()``, ``os.tempnam()`` and ``os.tmpfile()`` have + been removed in favor of the ``tempfile`` module. + .. ====================================================================== .. whole new modules get described in subsections here @@ -358,6 +409,15 @@ Changes to Python's build process and to the C API include: * PEP 3123: Making ``PyObject_HEAD`` conform to standard C. +* No more C API support for restricted execution. + +* ``PyNumber_Coerce()``, ``PyNumber_CoerceEx()``, ``PyMember_Get``, + and ``PyMember_Set`` C APIs are removed. + +* New C API ``PyImport_ImportModuleNoBlock()``, works like + ``PyImport_ImportModule()`` but won't block on the import lock (returning + an error instead). + .. ====================================================================== @@ -366,6 +426,7 @@ Port-Specific Changes Platform-specific changes go here. + .. ====================================================================== |