diff options
Diffstat (limited to 'Misc/NEWS.d/3.10.0a7.rst')
| -rw-r--r-- | Misc/NEWS.d/3.10.0a7.rst | 983 |
1 files changed, 983 insertions, 0 deletions
diff --git a/Misc/NEWS.d/3.10.0a7.rst b/Misc/NEWS.d/3.10.0a7.rst new file mode 100644 index 0000000000..e53f6ba84e --- /dev/null +++ b/Misc/NEWS.d/3.10.0a7.rst @@ -0,0 +1,983 @@ +.. bpo: 42988 +.. date: 2021-03-24-14-16-56 +.. nonce: P2aNco +.. release date: 2021-04-05 +.. section: Security + +CVE-2021-3426: Remove the ``getfile`` feature of the :mod:`pydoc` module +which could be abused to read arbitrary files on the disk (directory +traversal vulnerability). Moreover, even source code of Python modules can +contain sensitive data like passwords. Vulnerability reported by David +Schwörer. + +.. + +.. bpo: 43285 +.. date: 2021-03-13-03-48-14 +.. nonce: g-Hah3 +.. section: Security + +:mod:`ftplib` no longer trusts the IP address value returned from the server +in response to the PASV command by default. This prevents a malicious FTP +server from using the response to probe IPv4 address and port combinations +on the client network. + +Code that requires the former vulnerable behavior may set a +``trust_server_pasv_ipv4_address`` attribute on their :class:`ftplib.FTP` +instances to ``True`` to re-enable it. + +.. + +.. bpo: 43439 +.. date: 2021-03-08-23-06-07 +.. nonce: 5U3lXm +.. section: Security + +Add audit hooks for :func:`gc.get_objects`, :func:`gc.get_referrers` and +:func:`gc.get_referents`. Patch by Pablo Galindo. + +.. + +.. bpo: 27129 +.. date: 2021-04-03-22-04-46 +.. nonce: u_ehHb +.. section: Core and Builtins + +Update CPython bytecode magic number. + +.. + +.. bpo: 43672 +.. date: 2021-03-31-09-12-54 +.. nonce: jTT5uG +.. section: Core and Builtins + +Raise ImportWarning when calling find_loader(). + +.. + +.. bpo: 43660 +.. date: 2021-03-29-19-50-34 +.. nonce: scTgag +.. section: Core and Builtins + +Fix crash that happens when replacing ``sys.stderr`` with a callable that +can remove the object while an exception is being printed. Patch by Pablo +Galindo. + +.. + +.. bpo: 27129 +.. date: 2021-03-29-16-20-29 +.. nonce: BF03A5 +.. section: Core and Builtins + +The bytecode interpreter uses instruction, rather byte, offsets internally. +This reduces the number of EXTENDED_ARG instructions needed and streamlines +instruction dispatch a bit. + +.. + +.. bpo: 40645 +.. date: 2021-03-29-11-55-06 +.. nonce: PhaT-B +.. section: Core and Builtins + +Fix reference leak in the :mod:`_hashopenssl` extension. Patch by Pablo +Galindo. + +.. + +.. bpo: 42134 +.. date: 2021-03-26-17-30-19 +.. nonce: G4Sjxg +.. section: Core and Builtins + +Calls to find_module() by the import system now raise ImportWarning. + +.. + +.. bpo: 41064 +.. date: 2021-03-24-00-32-20 +.. nonce: _H0K_g +.. section: Core and Builtins + +Improve the syntax error for invalid usage of double starred elements ('**') +in f-strings. Patch by Pablo Galindo. + +.. + +.. bpo: 43575 +.. date: 2021-03-21-12-26-32 +.. nonce: pl-nSg +.. section: Core and Builtins + +Speed up calls to ``map()`` by using the :pep:`590` ``vectorcall`` calling +convention. Patch by Dong-hee Na. + +.. + +.. bpo: 42137 +.. date: 2021-03-20-19-54-47 +.. nonce: A8aQvj +.. section: Core and Builtins + +The import system now prefers using ``__spec__`` for ``ModuleType.__repr__`` +over ``module_repr()``. + +.. + +.. bpo: 43452 +.. date: 2021-03-20-01-21-37 +.. nonce: tDVJkc +.. section: Core and Builtins + +Added micro-optimizations to ``_PyType_Lookup()`` to improve cache lookup +performance in the common case of cache hits. + +.. + +.. bpo: 43555 +.. date: 2021-03-19-22-49-40 +.. nonce: ZmhYSA +.. section: Core and Builtins + +Report the column offset for :exc:`SyntaxError` for invalid line +continuation characters. Patch by Pablo Galindo. + +.. + +.. bpo: 43517 +.. date: 2021-03-16-17-12-54 +.. nonce: zAo6Ws +.. section: Core and Builtins + +Fix misdetection of circular imports when using ``from pkg.mod import +attr``, which caused false positives in non-trivial multi-threaded code. + +.. + +.. bpo: 43497 +.. date: 2021-03-15-07-50-30 +.. nonce: Uc5ZCJ +.. section: Core and Builtins + +Emit SyntaxWarnings for assertions with tuple constants, this is a +regression introduced in python3.7 + +.. + +.. bpo: 39316 +.. date: 2021-03-14-16-44-50 +.. nonce: Ns3a_F +.. section: Core and Builtins + +Tracing now has correct line numbers for attribute accesses when the the +attribute is on a different line from the object. Improves debugging and +profiling for multi-line method chains. + +.. + +.. bpo: 35883 +.. date: 2021-03-13-13-57-21 +.. nonce: UyGpdG +.. section: Core and Builtins + +Python no longer fails at startup with a fatal error if a command line +argument contains an invalid Unicode character. The +:c:func:`Py_DecodeLocale` function now escapes byte sequences which would be +decoded as Unicode characters outside the [U+0000; U+10ffff] range. + +.. + +.. bpo: 43410 +.. date: 2021-03-05-17-23-36 +.. nonce: lCzIg0 +.. section: Core and Builtins + +Fix a bug that was causing the parser to crash when emiting syntax errors +when reading input from stdin. Patch by Pablo Galindo + +.. + +.. bpo: 43406 +.. date: 2021-03-04-22-53-10 +.. nonce: Na_VpA +.. section: Core and Builtins + +Fix a possible race condition where ``PyErr_CheckSignals`` tries to execute +a non-Python signal handler. + +.. + +.. bpo: 42128 +.. date: 2021-03-03-19-04-23 +.. nonce: VouZjn +.. section: Core and Builtins + +Add ``__match_args__`` to :c:type:`structsequence` based classes. Patch by +Pablo Galindo. + +.. + +.. bpo: 43390 +.. date: 2021-03-03-17-58-49 +.. nonce: epPpwV +.. section: Core and Builtins + +CPython now sets the ``SA_ONSTACK`` flag in ``PyOS_setsig`` for the VM's +default signal handlers. This is friendlier to other in-process code that +an extension module or embedding use could pull in (such as Golang's cgo) +where tiny thread stacks are the norm and ``sigaltstack()`` has been used to +provide for signal handlers. This is a no-op change for the vast majority +of processes that don't use sigaltstack. + +.. + +.. bpo: 43287 +.. date: 2021-02-22-03-01-02 +.. nonce: aTs6fO +.. section: Core and Builtins + +Speed up calls to ``filter()`` by using the :pep:`590` ``vectorcall`` +calling convention. Patch by Dong-hee Na. + +.. + +.. bpo: 37448 +.. date: 2021-02-21-14-19-35 +.. nonce: btl7vO +.. section: Core and Builtins + +Add a radix tree based memory map to track in-use obmalloc arenas. Use to +replace the old implementation of address_in_range(). The radix tree +approach makes it easy to increase pool sizes beyond the OS page size. +Boosting the pool and arena size allows obmalloc to handle a significantly +higher percentage of requests from its ultra-fast paths. + +It also has the advantage of eliminating the memory unsanitary behavior of +the previous address_in_range(). The old address_in_range() was marked with +the annotations _Py_NO_SANITIZE_ADDRESS, _Py_NO_SANITIZE_THREAD, and +_Py_NO_SANITIZE_MEMORY. Those annotations are no longer needed. + +To disable the radix tree map, set a preprocessor flag as follows: +`-DWITH_PYMALLOC_RADIX_TREE=0`. + +Co-authored-by: Tim Peters <tim.peters@gmail.com> + +.. + +.. bpo: 29988 +.. date: 2020-02-03-13-23-10 +.. nonce: 8_UB5w +.. section: Core and Builtins + +Only handle asynchronous exceptions and requests to drop the GIL when +returning from a call or on the back edges of loops. Makes sure that +:meth:`__exit__` is always called in with statements, even for interrupts. + +.. + +.. bpo: 43720 +.. date: 2021-04-03-13-45-51 +.. nonce: FDZ5cZ +.. section: Library + +Document various stdlib deprecations in imp, pkgutil, and importlib.util for +removal in Python 3.12. + +.. + +.. bpo: 43433 +.. date: 2021-03-28-23-50-20 +.. nonce: so9j5G +.. section: Library + +:class:`xmlrpc.client.ServerProxy` no longer ignores query and fragment in +the URL of the server. + +.. + +.. bpo: 31956 +.. date: 2021-03-28-16-53-25 +.. nonce: Lt_67U +.. section: Library + +The :meth:`~array.array.index` method of :class:`array.array` now has +optional *start* and *stop* parameters. + +.. + +.. bpo: 40066 +.. date: 2021-03-25-21-26-30 +.. nonce: 7EBQ3_ +.. section: Library + +Enum: adjust ``repr()`` to show only enum and member name (not value, nor +angle brackets) and ``str()`` to show only member name. Update and improve +documentation to match. + +.. + +.. bpo: 42136 +.. date: 2021-03-25-08-44-26 +.. nonce: rRY9e1 +.. section: Library + +Deprecate all module_repr() methods found in importlib as their use is being +phased out by Python 3.12. + +.. + +.. bpo: 35930 +.. date: 2021-03-23-17-18-56 +.. nonce: RZ51pM +.. section: Library + +Raising an exception raised in a "future" instance will create reference +cycles. + +.. + +.. bpo: 41369 +.. date: 2021-03-21-17-50-42 +.. nonce: -fpmYZ +.. section: Library + +Finish updating the vendored libmpdec to version 2.5.1. Patch by Stefan +Krah. + +.. + +.. bpo: 43422 +.. date: 2021-03-21-17-02-52 +.. nonce: POk6cU +.. section: Library + +Revert the _decimal C API which was added in bpo-41324. + +.. + +.. bpo: 43577 +.. date: 2021-03-21-10-13-17 +.. nonce: m7JnAV +.. section: Library + +Fix deadlock when using :class:`ssl.SSLContext` debug callback with +:meth:`ssl.SSLContext.sni_callback`. + +.. + +.. bpo: 43571 +.. date: 2021-03-20-17-40-35 +.. nonce: acAL0W +.. section: Library + +It's now possible to create MPTCP sockets with IPPROTO_MPTCP + +.. + +.. bpo: 43542 +.. date: 2021-03-20-15-43-25 +.. nonce: 6bt2F6 +.. section: Library + +``image/heic`` and ``image/heif`` were added to :mod:`mimetypes`. + +.. + +.. bpo: 40645 +.. date: 2021-03-19-10-22-17 +.. nonce: 5pXhb- +.. section: Library + +The :mod:`hmac` module now uses OpenSSL's HMAC implementation when digestmod +argument is a hash name or builtin hash function. + +.. + +.. bpo: 43510 +.. date: 2021-03-16-17-20-33 +.. nonce: -BeQH_ +.. section: Library + +Implement :pep:`597`: Add ``EncodingWarning`` warning, ``-X +warn_default_encoding`` option, :envvar:`PYTHONWARNDEFAULTENCODING` +environment variable and ``encoding="locale"`` argument value. + +.. + +.. bpo: 43521 +.. date: 2021-03-16-16-05-02 +.. nonce: mRT6fh +.. section: Library + +``ast.unparse`` can now render NaNs and empty sets. + +.. + +.. bpo: 42914 +.. date: 2021-03-14-21-47-28 +.. nonce: 9U1o33 +.. section: Library + +:func:`pprint.pprint` gains a new boolean ``underscore_numbers`` optional +argument to emit integers with thousands separated by an underscore +character for improved readability (for example ``1_000_000`` instead of +``1000000``). + +.. + +.. bpo: 41361 +.. date: 2021-03-13-08-18-01 +.. nonce: lXDIlr +.. section: Library + +:meth:`~collections.deque.rotate` calls are now slightly faster due to +faster argument parsing. + +.. + +.. bpo: 43423 +.. date: 2021-03-11-15-44-18 +.. nonce: rRomRD +.. section: Library + +:func:`subprocess.communicate` no longer raises an IndexError when there is +an empty stdout or stderr IO buffer during a timeout on Windows. + +.. + +.. bpo: 27820 +.. date: 2021-03-10-14-07-44 +.. nonce: Wwdy-r +.. section: Library + +Fixed long-standing bug of smtplib.SMTP where doing AUTH LOGIN with +initial_response_ok=False will fail. + +The cause is that SMTP.auth_login _always_ returns a password if provided +with a challenge string, thus non-compliant with the standard for AUTH +LOGIN. + +Also fixes bug with the test for smtpd. + +.. + +.. bpo: 43445 +.. date: 2021-03-09-11-36-19 +.. nonce: jnj-UB +.. section: Library + +Add frozen modules to :data:`sys.stdlib_module_names`. For example, add +``"_frozen_importlib"`` and ``"_frozen_importlib_external"`` names. + +.. + +.. bpo: 43245 +.. date: 2021-03-08-22-14-37 +.. nonce: nXL-MC +.. section: Library + +Add keyword arguments support to ``ChainMap.new_child()``. + +.. + +.. bpo: 29982 +.. date: 2021-03-07-23-23-03 +.. nonce: Q9iszT +.. section: Library + +Add optional parameter *ignore_cleanup_errors* to +:func:`tempfile.TemporaryDirectory` and allow multiple :func:`cleanup` +attempts. Contributed by C.A.M. Gerlach. + +.. + +.. bpo: 43428 +.. date: 2021-03-07-18-54-39 +.. nonce: br0XmX +.. section: Library + +Include changes from `importlib_metadata 3.7 +<https://importlib-metadata.readthedocs.io/en/latest/history.html#v3-7-0>`_: + +Performance enhancements to distribution discovery. + +``entry_points`` only returns unique distributions. + +Introduces new ``EntryPoints`` object for containing a set of entry points +with convenience methods for selecting entry points by group or name. +``entry_points`` now returns this object if selection parameters are +supplied but continues to return a dict object for compatibility. Users are +encouraged to rely on the selection interface. The dict object result is +likely to be deprecated in the future. + +Added packages_distributions function to return a mapping of packages to the +distributions that provide them. + +.. + +.. bpo: 43332 +.. date: 2021-03-07-11-23-20 +.. nonce: weatsh +.. section: Library + +Improves the networking efficiency of :mod:`http.client` when using a proxy +via :meth:`~HTTPConnection.set_tunnel`. Fewer small send calls are made +during connection setup. + +.. + +.. bpo: 43420 +.. date: 2021-03-07-08-03-31 +.. nonce: cee_X5 +.. section: Library + +Improve performance of class:`fractions.Fraction` arithmetics for large +components. Contributed by Sergey B. Kirpichev. + +.. + +.. bpo: 43356 +.. date: 2021-03-04-21-51-20 +.. nonce: X7IGBM +.. section: Library + +Allow passing a signal number to ``_thread.interrupt_main()``. + +.. + +.. bpo: 43399 +.. date: 2021-03-04-17-53-46 +.. nonce: Wn95u- +.. section: Library + +Fix ``ElementTree.extend`` not working on iterators when using the Python +implementation + +.. + +.. bpo: 43369 +.. date: 2021-03-02-15-25-28 +.. nonce: F4knlQ +.. section: Library + +Improve :mod:`sqlite3` error handling: If ``sqlite3_column_text()`` and +``sqlite3_column_blob()`` set ``SQLITE_NOMEM``, :exc:`MemoryError` is now +raised. Patch by Erlend E. Aasland. + +.. + +.. bpo: 43368 +.. date: 2021-03-02-13-45-05 +.. nonce: t9XEkQ +.. section: Library + +Fix a regression introduced in GH-24562, where an empty bytestring was +fetched as ``None`` instead of ``b''`` in :mod:`sqlite3`. Patch by Mariusz +Felisiak. + +.. + +.. bpo: 41282 +.. date: 2021-03-02-09-54-22 +.. nonce: xL4h94 +.. section: Library + +Fixed stacklevel of ``DeprecationWarning`` emitted from ``import +distutils``. + +.. + +.. bpo: 42129 +.. date: 2021-02-28-04-21-35 +.. nonce: V0KifQ +.. section: Library + +``importlib.resources`` now honors namespace packages, merging resources +from each location in the namespace as introduced in ``importlib_resources`` +3.2 and including incidental changes through 5.0.3. + +.. + +.. bpo: 43295 +.. date: 2021-02-22-22-54-40 +.. nonce: h_ffu7 +.. section: Library + +:meth:`datetime.datetime.strptime` now raises ``ValueError`` instead of +``IndexError`` when matching ``'z'`` with the ``%z`` format specifier. + +.. + +.. bpo: 43125 +.. date: 2021-02-07-19-13-30 +.. nonce: AqNoMa +.. section: Library + +Return empty string if base64mime.body_encode receive empty bytes + +.. + +.. bpo: 43084 +.. date: 2021-01-31-17-31-13 +.. nonce: i8nLpK +.. section: Library + +:func:`curses.window.enclose` returns now ``True`` or ``False`` (as was +documented) instead of ``1`` or ``0``. + +.. + +.. bpo: 42994 +.. date: 2021-01-21-16-58-34 +.. nonce: El0Ksp +.. section: Library + +Add MIME types for opus, AAC, 3gpp and 3gpp2 + +.. + +.. bpo: 14678 +.. date: 2021-01-07-21-25-49 +.. nonce: 1zniCH +.. section: Library + +Add an invalidate_caches() method to the zipimport.zipimporter class to +support importlib.invalidate_caches(). Patch by Desmond Cheong. + +.. + +.. bpo: 42782 +.. date: 2020-12-29-13-46-57 +.. nonce: 3r0HFY +.. section: Library + +Fail fast in :func:`shutil.move()` to avoid creating destination directories +on failure. + +.. + +.. bpo: 40066 +.. date: 2020-09-23-21-58-34 +.. nonce: f1dr_5 +.. section: Library + +Enum's `repr()` and `str()` have changed: `repr()` is now +*EnumClass.MemberName* and `str()` is *MemberName*. Additionally, stdlib +Enum's whose contents are available as module attributes, such as +`RegexFlag.IGNORECASE`, have their `repr()` as *module.name*, e.g. +`re.IGNORECASE`. + +.. + +.. bpo: 26053 +.. date: 2020-09-01-10-12-13 +.. nonce: hXikw_ +.. section: Library + +Fixed bug where the :mod:`pdb` interactive run command echoed the args from +the shell command line, even if those have been overridden at the pdb +prompt. + +.. + +.. bpo: 24160 +.. date: 2020-08-28-23-07-53 +.. nonce: MSGnKr +.. section: Library + +Fixed bug where breakpoints did not persist across multiple debugger +sessions in :mod:`pdb`'s interactive mode. + +.. + +.. bpo: 40701 +.. date: 2020-05-27-05-42-39 +.. nonce: PBIgW1 +.. section: Library + +When the :data:`tempfile.tempdir` global variable is set to a value of type +bytes, it is now handled consistently. Previously exceptions could be +raised from some tempfile APIs when the directory did not already exist in +this situation. Also ensures that the :func:`tempfile.gettempdir()` and +:func:`tempfile.gettempdirb()` functions *always* return ``str`` and +``bytes`` respectively. + +.. + +.. bpo: 39342 +.. date: 2020-01-15-11-15-35 +.. nonce: S8PuJO +.. section: Library + +Expose ``X509_V_FLAG_ALLOW_PROXY_CERTS`` as +:data:`~ssl.VERIFY_ALLOW_PROXY_CERTS` to allow proxy certificate validation +as explained in +https://www.openssl.org/docs/man1.1.1/man7/proxy-certificates.html. + +.. + +.. bpo: 31861 +.. date: 2018-08-24-01-08-09 +.. nonce: -q9RKJ +.. section: Library + +Add builtins.aiter and builtins.anext. Patch by Joshua Bronson (@jab), +Daniel Pope (@lordmauve), and Justin Wang (@justin39). + +.. + +.. bpo: 43199 +.. date: 2021-03-13-18-43-54 +.. nonce: ZWA6KX +.. section: Documentation + +Answer "Why is there no goto?" in the Design and History FAQ. + +.. + +.. bpo: 43407 +.. date: 2021-03-04-22-53-03 +.. nonce: x570l5 +.. section: Documentation + +Clarified that a result from :func:`time.monotonic`, +:func:`time.perf_counter`, :func:`time.process_time`, or +:func:`time.thread_time` can be compared with the result from any following +call to the same function - not just the next immediate call. + +.. + +.. bpo: 43354 +.. date: 2021-03-02-12-55-34 +.. nonce: ezZYkx +.. section: Documentation + +Fix type documentation for ``Fault.faultCode``; the type has to be ``int`` +instead of ``str``. + +.. + +.. bpo: 41933 +.. date: 2020-10-05-20-04-43 +.. nonce: Pff94- +.. section: Documentation + +Clarified wording of s * n in the Common Sequence Operations + +.. + +.. bpo: 37945 +.. date: 2021-03-31-11-38-42 +.. nonce: HTUYhv +.. section: Tests + +Fix test_getsetlocale_issue1813() of test_locale: skip the test if +``setlocale()`` fails. Patch by Victor Stinner. + +.. + +.. bpo: 41561 +.. date: 2021-03-18-10-34-42 +.. nonce: pDg4w- +.. section: Tests + +Add workaround for Ubuntu's custom OpenSSL security level policy. + +.. + +.. bpo: 43179 +.. date: 2021-03-31-12-20-23 +.. nonce: Qbe1OD +.. section: Build + +Introduce and correctly use ALIGNOF_X in place of SIZEOF_X for +alignment-related code in optimized string routines. Patch by Jessica +Clarke. + +.. + +.. bpo: 43631 +.. date: 2021-03-26-09-16-34 +.. nonce: msJyPi +.. section: Build + +Update macOS, Windows, and CI to OpenSSL 1.1.1k. + +.. + +.. bpo: 43617 +.. date: 2021-03-24-16-55-55 +.. nonce: d69KAv +.. section: Build + +Improve configure.ac: Check for presence of autoconf-archive package and +remove our copies of M4 macros. + +.. + +.. bpo: 43466 +.. date: 2021-03-11-00-14-47 +.. nonce: N861Z5 +.. section: Build + +The ``configure`` script now supports ``--with-openssl-rpath`` option. + +.. + +.. bpo: 43372 +.. date: 2021-03-04-17-13-57 +.. nonce: FfqDVL +.. section: Build + +Use ``_freeze_importlib`` to generate code for the ``__hello__`` module. +This approach ensures the code matches the interpreter version. Previously, +PYTHON_FOR_REGEN was used to generate the code, which might be wrong. The +marshal format for code objects has changed with bpo-42246, commit 877df851. +Update the code and the expected code sizes in ctypes test_frozentable. + +.. + +.. bpo: 43440 +.. date: 2021-03-09-11-15-41 +.. nonce: igy2Mn +.. section: Windows + +Build :mod:`sqlite3` with the ``R*Tree`` module enabled. Patch by Erlend E. +Aasland. + +.. + +.. bpo: 42225 +.. date: 2021-03-29-16-22-27 +.. nonce: iIeiLg +.. section: IDLE + +Document that IDLE can fail on Unix either from misconfigured IP masquerage +rules or failure displaying complex colored (non-ascii) characters. + +.. + +.. bpo: 43688 +.. date: 2021-04-01-09-10-42 +.. nonce: G4gs6k +.. section: C API + +The limited C API is now supported if Python is built in debug mode (if the +``Py_DEBUG`` macro is defined). In the limited C API, the +:c:func:`Py_INCREF` and :c:func:`Py_DECREF` functions are now implemented as +opaque function calls, rather than accessing directly the +:c:member:`PyObject.ob_refcnt` member, if Python is built in debug mode and +the ``Py_LIMITED_API`` macro targets Python 3.10 or newer. It became +possible to support the limited C API in debug mode because the +:c:type:`PyObject` structure is the same in release and debug mode since +Python 3.8 (see :issue:`36465`). + +The limited C API is still not supported in the ``--with-trace-refs`` +special build (``Py_TRACE_REFS`` macro). + +Patch by Victor Stinner. + +.. + +.. bpo: 43244 +.. date: 2021-03-24-01-22-14 +.. nonce: 31-97x +.. section: C API + +Remove the ``pyarena.h`` header file with functions: + +* ``PyArena_New()`` +* ``PyArena_Free()`` +* ``PyArena_Malloc()`` +* ``PyArena_AddPyObject()`` + +These functions were undocumented, excluded from the limited C API, and were +only used internally by the compiler. Patch by Victor Stinner. + +.. + +.. bpo: 43244 +.. date: 2021-03-23-20-53-41 +.. nonce: VK3sLH +.. section: C API + +Remove the compiler and parser functions using ``struct _mod`` type, because +the public AST C API was removed: + +* ``PyAST_Compile()`` +* ``PyAST_CompileEx()`` +* ``PyAST_CompileObject()`` +* ``PyFuture_FromAST()`` +* ``PyFuture_FromASTObject()`` +* ``PyParser_ASTFromFile()`` +* ``PyParser_ASTFromFileObject()`` +* ``PyParser_ASTFromFilename()`` +* ``PyParser_ASTFromString()`` +* ``PyParser_ASTFromStringObject()`` + +These functions were undocumented and excluded from the limited C API. Patch +by Victor Stinner. + +.. + +.. bpo: 43244 +.. date: 2021-03-19-12-56-11 +.. nonce: VuIyOD +.. section: C API + +Remove ``ast.h``, ``asdl.h``, and ``Python-ast.h`` header files. These +functions were undocumented and excluded from the limited C API. Most names +defined by these header files were not prefixed by ``Py`` and so could +create names conflicts. For example, ``Python-ast.h`` defined a ``Yield`` +macro which was conflict with the ``Yield`` name used by the Windows +``<winbase.h>`` header. Use the Python :mod:`ast` module instead. Patch by +Victor Stinner. + +.. + +.. bpo: 43541 +.. date: 2021-03-18-12-44-33 +.. nonce: ICigzd +.. section: C API + +Fix a ``PyEval_EvalCodeEx()`` regression: fix reference counting on +builtins. Patch by Victor Stinner. + +.. + +.. bpo: 43244 +.. date: 2021-03-17-23-53-14 +.. nonce: kfPqA_ +.. section: C API + +Remove the ``symtable.h`` header file and the undocumented functions: + +* ``PyST_GetScope()`` +* ``PySymtable_Build()`` +* ``PySymtable_BuildObject()`` +* ``PySymtable_Free()`` +* ``Py_SymtableString()`` +* ``Py_SymtableStringObject()`` + +The ``Py_SymtableString()`` function was part the stable ABI by mistake but +it could not be used, because the ``symtable.h`` header file was excluded +from the limited C API. + +The Python :mod:`symtable` module remains available and is unchanged. + +Patch by Victor Stinner. + +.. + +.. bpo: 43244 +.. date: 2021-03-17-23-20-07 +.. nonce: diyn2C +.. section: C API + +Remove the ``PyAST_Validate()`` function. It is no longer possible to build +a AST object (``mod_ty`` type) with the public C API. The function was +already excluded from the limited C API (:pep:`384`). Patch by Victor +Stinner. |