whatsnew/3.5: Second pass over NEWS entries
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Yury Selivanov
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@ -4,7 +4,7 @@
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:Release: |release|
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:Date: |today|
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:Editor: Elvis Pranskevichus <elprans@gmail.com>
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:Editors: Elvis Pranskevichus <elprans@gmail.com>, Yury Selivanov <yselivanov@gmail.com>
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.. Rules for maintenance:
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@ -671,11 +671,18 @@ collections
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The :class:`~collections.OrderedDict` class is now implemented in C, which
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makes it 4 to 100 times faster. (Contributed by Eric Snow in :issue:`16991`.)
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:meth:`OrderedDict.items <collections.OrderedDict.items>`,
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:meth:`OrderedDict.items <collections.OrderedDict.keys>`,
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:meth:`OrderedDict.items <collections.OrderedDict.values>` views now support
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:func:`reversed` iteration.
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(Contributed by Serhiy Storchaka in :issue:`19505`.)
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The :class:`~collections.deque` class now defines
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:meth:`~collections.deque.index`, :meth:`~collections.deque.insert`, and
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:meth:`~collections.deque.copy`. This allows deques to be recognized as a
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:class:`~collections.abc.MutableSequence` and improves their substitutability
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for lists. (Contributed by Raymond Hettinger :issue:`23704`.)
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:meth:`~collections.deque.copy`, as well as supports ``+`` and ``*`` operators.
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This allows deques to be recognized as a :class:`~collections.abc.MutableSequence`
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and improves their substitutability for lists.
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(Contributed by Raymond Hettinger :issue:`23704`.)
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Docstrings produced by :func:`~collections.namedtuple` can now be updated::
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@ -945,6 +952,11 @@ now accept an ``(address, netmask)`` tuple argument, so as to easily construct
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network objects from existing addresses. (Contributed by Peter Moody
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and Antoine Pitrou in :issue:`16531`.)
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New :attr:`~ipaddress.IPv4Network.reverse_pointer>` attribute for
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:class:`~ipaddress.IPv4Network` and :class:`~ipaddress.IPv6Network` classes
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returns the name of the reverse DNS PTR record.
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(Contributed by Leon Weber in :issue:`20480`.)
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json
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----
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@ -1100,6 +1112,13 @@ The :func:`~re.sub` and :func:`~re.subn` functions now replace unmatched
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groups with empty strings instead of raising an exception.
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(Contributed by Serhiy Storchaka in :issue:`1519638`.)
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The :class:`re.error` exceptions have new attributes:
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:attr:`~re.error.msg`, :attr:`~re.error.pattern`,
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:attr:`~re.error.pos`, :attr:`~re.error.lineno`,
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and :attr:`~re.error.colno` that provide better context
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information about the error.
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(Contributed by Serhiy Storchaka in :issue:`22578`.)
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readline
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--------
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@ -1109,6 +1128,13 @@ the specified number of trailing elements in history to the given file.
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(Contributed by Bruno Cauet in :issue:`22940`.)
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selectors
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---------
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The module now supports efficient ``/dev/poll`` on Solaris.
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(Contributed by Giampaolo Rodola' in :issue:`18931`.)
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shutil
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------
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@ -1244,7 +1270,7 @@ the actual protocol version in use.
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The :class:`~ssl.SSLSocket` class now implements
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a :meth:`SSLSocket.sendfile <ssl.SSLSocket.sendfile>` method.
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(Contributed by Giampaolo Rodola in :issue:`17552`.)
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(Contributed by Giampaolo Rodola' in :issue:`17552`.)
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The :meth:`SSLSocket.send <ssl.SSLSocket.send>` method now raises either
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:exc:`ssl.SSLWantReadError` or :exc:`ssl.SSLWantWriteError` exception on a
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@ -1289,6 +1315,20 @@ socket timeout every time bytes are received or sent. The socket timeout is
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now the maximum total duration to send all data.
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(Contributed by Victor Stinner in :issue:`23853`.)
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The *backlog* argument of the :meth:`socket.listen <socket.socket.listen>`
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method is now optional. By default it is set to
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:data:`SOMAXCONN <socket.SOMAXCONN>` or to ``128`` whichever is less.
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(Contributed by Charles-François Natali in :issue:`21455`.)
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sqlite3
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-------
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The :class:`~sqlite3.Row` class now fully supports sequence protocol,
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in particular :func:`reverse` and slice indexing.
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(Contributed by Claudiu Popa in :issue:`10203`; by Lucas Sinclair,
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Jessica McKellar, and Serhiy Storchaka in :issue:`13583`.)
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subprocess
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----------
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@ -1363,6 +1403,10 @@ New command line option ``-u`` or ``--unit=U`` can be used to specify the time
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unit for the timer output. Supported options are ``usec``, ``msec``,
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or ``sec``. (Contributed by Julian Gindi in :issue:`18983`.)
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The :func:`~timeit.timeit` function has a new *globals* parameter for
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specifying the namespace in which the code will be running.
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(Contributed by Ben Roberts in :issue:`2527`.)
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tkinter
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-------
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@ -1424,6 +1468,11 @@ The :func:`request.urlopen <urllib.request.urlopen>` function accepts an
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:class:`ssl.SSLContext` object as a *context* argument, which will be used for
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the HTTPS connection. (Contributed by Alex Gaynor in :issue:`22366`.)
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The :func:`parse.urljoin <urllib.parse.urljoin>` was updated to use the
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:rfc:`3986` semantics for the resolution of relative URLs, rather than
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:rfc:`1808` and :rfc:`2396`.
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(Contributed by Demian Brecht and Senthil Kumaran in :issue:`22118`.)
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unicodedata
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-----------
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@ -1439,6 +1488,26 @@ New command line option ``--locals`` to show local variables in
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tracebacks. (Contributed by Robert Collins in :issue:`22936`.)
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unittest.mock
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-------------
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The :class:`~unittest.mock.Mock` has the following improvements:
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* Class constructor has a new *unsafe* parameter, which causes mock
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objects to raise :exc:`AttributeError` on attribute names starting
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with ``"assert"``.
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(Contributed by Kushal Das in :issue:`21238`.)
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* A new :meth:`Mock.assert_not_called <unittest.mock.Mock.assert_not_called>`
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method to check if the mock object was called.
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(Contributed by Kushal Das in :issue:`21262`.)
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The :class:`~unittest.mock.MagicMock` class now supports :meth:`__truediv__`,
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:meth:`__divmod__` and :meth:`__matmul__` operators.
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(Contributed by Johannes Baiter in :issue:`20968`, and Håkan Lövdahl
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in :issue:`23581` and :issue:`23568`.)
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wsgiref
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-------
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@ -1548,16 +1617,32 @@ The :func:`property` getter calls are up to 25% faster.
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Instantiation of :class:`fractions.Fraction` is now up to 30% faster.
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(Contributed by Stefan Behnel in :issue:`22464`.)
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String methods :meth:`~str.find`, :meth:`~str.rfind`, :meth:`~str.split`,
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:meth:`~str.partition` and :keyword:`in` string operator are now significantly
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faster for searching 1-character substrings.
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(Contributed by Serhiy Storchaka in :issue:`23573`.)
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Build and C API Changes
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=======================
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New ``calloc`` functions were added:
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* :c:func:`PyMem_RawCalloc`
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* :c:func:`PyMem_Calloc`
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* :c:func:`PyObject_Calloc`
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* :c:func:`_PyObject_GC_Calloc`
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* :c:func:`PyMem_RawCalloc`,
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* :c:func:`PyMem_Calloc`,
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* :c:func:`PyObject_Calloc`,
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* :c:func:`_PyObject_GC_Calloc`.
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(Contributed by Victor Stinner in :issue:`21233`.)
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New encoding/decoding helper functions:
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* :c:func:`Py_DecodeLocale` (replaced ``_Py_char2wchar()``),
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* :c:func:`Py_EncodeLocale` (replaced ``_Py_wchar2char()``).
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(Contributed by Victor Stinner in :issue:`18395`.)
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The :c:member:`PyTypeObject.tp_finalize` slot is now part of stable ABI.
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Windows builds now require Microsoft Visual C++ 14.0, which
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is available as part of `Visual Studio 2015 <http://www.visualstudio.com>`_.
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@ -1833,6 +1918,7 @@ Changes in the C API
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* Removed non-documented macro :c:macro:`PyObject_REPR` which leaked references.
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Use format character ``%R`` in :c:func:`PyUnicode_FromFormat`-like functions
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to format the :func:`repr` of the object.
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(Contributed by Serhiy Storchaka in :issue:`22453`.)
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* Because the lack of the :attr:`__module__` attribute breaks pickling and
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introspection, a deprecation warning now is raised for builtin type without
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@ -1844,4 +1930,3 @@ Changes in the C API
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:c:member:`tp_as_async` slot. Refer to :ref:`coro-objects` for
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new types, structures and functions.
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* :c:member:`PyTypeObject.tp_finalize` is now part of stable ABI.
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