Add whatsnew entries for 3.4.
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Antoine Pitrou
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@ -94,14 +94,21 @@ New library modules:
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New built-in features:
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* None yet.
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* :ref:`PEP 442: Safe object finalization <pep-442>`.
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* :ref:`PEP 445: Configurable memory allocators <pep-445>`.
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Implementation improvements:
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* A more efficient :mod:`marshal` format <http://bugs.python.org/issue16475>.
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* A more efficient :mod:`marshal` format (:issue:`16475`).
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* Improve finalization of Python modules to avoid setting their globals
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to None, in most cases (:issue:`18214`).
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Significantly Improved Library Modules:
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* Single-dispatch generic functions (:pep:`443`)
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* SHA-3 (Keccak) support for :mod:`hashlib`.
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* TLSv1.1 and TLSv1.2 support for :mod:`ssl`.
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* SHA-3 (Keccak) support for :mod:`hashlib`.
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* TLSv1.1 and TLSv1.2 support for :mod:`ssl`.
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@ -112,6 +119,10 @@ Security improvements:
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Please read on for a comprehensive list of user-facing changes.
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.. _pep-445:
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PEP 445: Add new APIs to customize Python memory allocators
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===========================================================
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PEP 445: Add new APIs to customize Python memory allocators
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===========================================================
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@ -147,6 +158,8 @@ Some smaller changes made to the core Python language are:
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to specify the value they return if the iterable they are evaluating has no
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elements. Contributed by Julian Berman in :issue:`18111`.
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* Module objects are now :mod:`weakref`'able.
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New Modules
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===========
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@ -222,6 +235,26 @@ functools
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New :func:`functools.singledispatch` decorator: see the :pep:`443`.
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mmap
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----
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mmap objects can now be weakref'ed.
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(Contributed by Valerie Lambert in :issue:`4885`.)
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poplib
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------
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New :meth:`~poplib.POP3.stls` method to switch a clear-text POP3 session into
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an encrypted POP3 session.
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New :meth:`~poplib.POP3.capa` method to query the capabilities advertised by the
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POP3 server.
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(Contributed by Lorenzo Catucci in :issue:`4473`.)
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inspect
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-------
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@ -241,18 +274,50 @@ try/except statement by code that only cares whether or not an error occurred.
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ssl
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---
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TLSv1.1 and TLSv1.2 support (Contributed by Michele Orrù and Antoine Pitrou
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in :issue:`16692`)
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TLSv1.1 and TLSv1.2 support.
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New diagnostic functions :func:`~ssl.get_default_verify_paths`,
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:meth:`~ssl.SSLContext.cert_store_stats` and
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:meth:`~ssl.SSLContext.get_ca_certs`
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(Contributed by Michele Orrù and Antoine Pitrou in :issue:`16692`)
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Add :func:`ssl.enum_cert_store` to retrieve certificates and CRL from Windows'
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cert store.
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* New diagnostic functions :func:`~ssl.get_default_verify_paths`,
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:meth:`~ssl.SSLContext.cert_store_stats` and
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:meth:`~ssl.SSLContext.get_ca_certs`
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* Add :func:`ssl.enum_cert_store` to retrieve certificates and CRL from Windows'
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cert store.
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(Contributed by Christian Heimes in :issue:`18143`, :issue:`18147` and
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:issue:`17134`)
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:issue:`17134`.)
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Support for server-side SNI using the new
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:meth:`ssl.SSLContext.set_servername_callback` method.
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(Contributed by Daniel Black in :issue:`8109`.)
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struct
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------
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Streaming struct unpacking using :func:`struct.iter_unpack`.
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(Contributed by Antoine Pitrou in :issue:`17804`.)
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urllib
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------
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Add support.for ``data:`` URLs in :mod:`urllib.request`.
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(Contributed by Mathias Panzenböck in :issue:`16423`.)
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unittest
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--------
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Support for easy dynamically-generated subtests using the
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:meth:`~unittest.TestCase.subTest` context manager.
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(Contributed by Antoine Pitrou in :issue:`16997`.)
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wave
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----
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@ -263,6 +328,7 @@ plain tuple. (Contributed by Claudiu Popa in :issue:`17487`.)
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:meth:`wave.open` now supports the context manager protocol. (Contributed
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by Claudiu Popa in :issue:`17616`.)
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stat
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----
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@ -272,6 +338,25 @@ platform-dependent. (Contributed by Christian Heimes in :issue:`11016`.)
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The module supports new file types: door, event port and whiteout.
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weakref
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-------
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New :class:`~weakref.WeakMethod` class simulates weak references to bound
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methods.
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(Contributed by Antoine Pitrou in :issue:`14631`.)
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xml.etree
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---------
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Add an event-driven parser for non-blocking applications,
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:class:`~xml.etree.ElementTree.IncrementalParser`.
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(Contributed by Antoine Pitrou in :issue:`17782`.)
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colorsys
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--------
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@ -280,6 +365,14 @@ been expanded so that they match the FCC NTSC versions. The change in
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results should be less than 1% and may better match results found elsewhere.
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Other improvements
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==================
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Tab-completion is now enabled by default in the interactive interpreter.
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(Contributed by Antoine Pitrou and Éric Araujo in :issue:`5845`.)
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Optimizations
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=============
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