diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/whatsnew/3.4.rst | 113 |
1 files changed, 103 insertions, 10 deletions
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst index 0333c11..0ef5c92 100644 --- a/Doc/whatsnew/3.4.rst +++ b/Doc/whatsnew/3.4.rst @@ -94,14 +94,21 @@ New library modules: New built-in features: -* None yet. +* :ref:`PEP 442: Safe object finalization <pep-442>`. +* :ref:`PEP 445: Configurable memory allocators <pep-445>`. Implementation improvements: -* A more efficient :mod:`marshal` format <http://bugs.python.org/issue16475>. +* A more efficient :mod:`marshal` format (:issue:`16475`). +* Improve finalization of Python modules to avoid setting their globals + to None, in most cases (:issue:`18214`). Significantly Improved Library Modules: +* Single-dispatch generic functions (:pep:`443`) +* SHA-3 (Keccak) support for :mod:`hashlib`. +* TLSv1.1 and TLSv1.2 support for :mod:`ssl`. + * SHA-3 (Keccak) support for :mod:`hashlib`. * TLSv1.1 and TLSv1.2 support for :mod:`ssl`. @@ -112,6 +119,10 @@ Security improvements: Please read on for a comprehensive list of user-facing changes. +.. _pep-445: + +PEP 445: Add new APIs to customize Python memory allocators +=========================================================== PEP 445: Add new APIs to customize Python memory allocators =========================================================== @@ -147,6 +158,8 @@ Some smaller changes made to the core Python language are: to specify the value they return if the iterable they are evaluating has no elements. Contributed by Julian Berman in :issue:`18111`. +* Module objects are now :mod:`weakref`'able. + New Modules =========== @@ -222,6 +235,26 @@ functools New :func:`functools.singledispatch` decorator: see the :pep:`443`. +mmap +---- + +mmap objects can now be weakref'ed. + +(Contributed by Valerie Lambert in :issue:`4885`.) + + +poplib +------ + +New :meth:`~poplib.POP3.stls` method to switch a clear-text POP3 session into +an encrypted POP3 session. + +New :meth:`~poplib.POP3.capa` method to query the capabilities advertised by the +POP3 server. + +(Contributed by Lorenzo Catucci in :issue:`4473`.) + + inspect ------- @@ -241,18 +274,50 @@ try/except statement by code that only cares whether or not an error occurred. ssl --- -TLSv1.1 and TLSv1.2 support (Contributed by Michele Orrù and Antoine Pitrou -in :issue:`16692`) +TLSv1.1 and TLSv1.2 support. + +(Contributed by Michele Orrù and Antoine Pitrou in :issue:`16692`) -New diagnostic functions :func:`~ssl.get_default_verify_paths`, -:meth:`~ssl.SSLContext.cert_store_stats` and -:meth:`~ssl.SSLContext.get_ca_certs` +* New diagnostic functions :func:`~ssl.get_default_verify_paths`, + :meth:`~ssl.SSLContext.cert_store_stats` and + :meth:`~ssl.SSLContext.get_ca_certs` -Add :func:`ssl.enum_cert_store` to retrieve certificates and CRL from Windows' -cert store. +* Add :func:`ssl.enum_cert_store` to retrieve certificates and CRL from Windows' + cert store. (Contributed by Christian Heimes in :issue:`18143`, :issue:`18147` and -:issue:`17134`) + :issue:`17134`.) + +Support for server-side SNI using the new +:meth:`ssl.SSLContext.set_servername_callback` method. + +(Contributed by Daniel Black in :issue:`8109`.) + + +struct +------ + +Streaming struct unpacking using :func:`struct.iter_unpack`. + +(Contributed by Antoine Pitrou in :issue:`17804`.) + + +urllib +------ + +Add support.for ``data:`` URLs in :mod:`urllib.request`. + +(Contributed by Mathias Panzenböck in :issue:`16423`.) + + +unittest +-------- + +Support for easy dynamically-generated subtests using the +:meth:`~unittest.TestCase.subTest` context manager. + +(Contributed by Antoine Pitrou in :issue:`16997`.) + wave ---- @@ -263,6 +328,7 @@ plain tuple. (Contributed by Claudiu Popa in :issue:`17487`.) :meth:`wave.open` now supports the context manager protocol. (Contributed by Claudiu Popa in :issue:`17616`.) + stat ---- @@ -272,6 +338,25 @@ platform-dependent. (Contributed by Christian Heimes in :issue:`11016`.) The module supports new file types: door, event port and whiteout. + +weakref +------- + +New :class:`~weakref.WeakMethod` class simulates weak references to bound +methods. + +(Contributed by Antoine Pitrou in :issue:`14631`.) + + +xml.etree +--------- + +Add an event-driven parser for non-blocking applications, +:class:`~xml.etree.ElementTree.IncrementalParser`. + +(Contributed by Antoine Pitrou in :issue:`17782`.) + + colorsys -------- @@ -280,6 +365,14 @@ been expanded so that they match the FCC NTSC versions. The change in results should be less than 1% and may better match results found elsewhere. +Other improvements +================== + +Tab-completion is now enabled by default in the interactive interpreter. + +(Contributed by Antoine Pitrou and Éric Araujo in :issue:`5845`.) + + Optimizations ============= |