Commit Graph

3064 Commits

Author SHA1 Message Date
Victor Stinner dc24b8a2ac
bpo-39573: Porting to Python 3.10: Py_SET_SIZE() macro (GH-20610)
In What's New in Python 3.10, propose Py_SET_SIZE(), Py_SET_REFCNT()
and Py_SET_TYPE() macros for backward compatibility with Python 3.9
and older.
2020-06-04 22:10:43 +02:00
Victor Stinner 59d3dce69b
bpo-40839: PyDict_GetItem() requires the GIL (GH-20580)
Calling PyDict_GetItem() without GIL held had been allowed for
historical reason. It is no longer allowed.
2020-06-02 14:03:25 +02:00
Victor Stinner 337d3103a2
bpo-40241: What's New in Python 3.9: opaque PyGC_Head (GH-20586) 2020-06-02 12:02:58 +02:00
Huon Wilson 39de8e4b6f
bpo-40630: adjust tracemalloc.reset_peak docs for backport to 3.9 (GH-20546) 2020-06-01 19:26:33 +02:00
Pablo Galindo 2f172d8f15
bpo-17005: Move topological sort functionality to its own module (GH-20558)
The topological sort functionality that was introduced initially in the
functools module has been moved to a new graphlib module to
better accommodate the new tools and keep the original scope of the
functools module.
2020-06-01 00:41:14 +01:00
Lysandros Nikolaou 491a3d3a75
Fix typo in "What's new in Python 3.9" (GH-20559)
Automerge-Triggered-By: @pablogsal
2020-05-31 16:28:46 -07:00
Batuhan Taskaya cf88871d6a
bpo-40759: Deprecate the symbol module (GH-20364)
Automerge-Triggered-By: @pablogsal
2020-05-31 15:01:50 -07:00
Batuhan Taskaya 007bb06a2d
bpo-40829: Add a what's new entry about deprecation of shuffle's random parameter (GH-20541) 2020-05-30 15:15:06 -07:00
Niklas Fiekas 8bd216dfed
bpo-29882: Add an efficient popcount method for integers (#771)
* bpo-29882: Add an efficient popcount method for integers

* Update 'sign bit' and versionadded in docs

* Add entry to whatsnew document

* Doc: use positive example, mention population count

* Minor cleanups of the core code

* Move popcount_digit closer to where it's used

* Use z instead of self after conversion

* Add 'absolute value' and 'population count' to docstring

* Fix clinic error about missing summary line

* Ensure popcount_digit is portable with 64-bit ints

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-05-29 17:28:02 +01:00
Michał Górny 242d95659b
bpo-1294959: Try to clarify the meaning of platlibdir (GH-20332)
Try to make the meaning of platlibdir clear.  The previous wording could
be misinterpreted to suggest that it will be used to find all shared
libraries on the system, and not just Python extensions.  Furthermore,
it was unclear whether it affects third-party (site-packages) extensions
or not.  The new wording tries to make its dual purpose clear,
and provide the additional example of extensions in site-packages.
2020-05-28 18:33:04 +02:00
Victor Stinner fda7f6d61b
bpo-37878: PyThreadState_DeleteCurrent() was not removed (GH-20489)
Update What's New in Python 3.9.

PyThreadState_DeleteCurrent was not removed, but excluded from the limited C API.
2020-05-28 18:26:01 +02:00
Serhiy Storchaka 5f4b229df7
bpo-40792: Make the result of PyNumber_Index() always having exact type int. (GH-20443)
Previously, the result could have been an instance of a subclass of int.

Also revert bpo-26202 and make attributes start, stop and step of the range
object having exact type int.

Add private function _PyNumber_Index() which preserves the old behavior
of PyNumber_Index() for performance to use it in the conversion functions
like PyLong_AsLong().
2020-05-28 10:33:45 +03:00
Elazar Gershuni 56853d8ec6
bpo-39939: Fix removeprefix issue number in the What's New in Python 3.9 (GH-20473) 2020-05-28 02:41:24 +02:00
Victor Stinner fe2978b3b9
bpo-39573: Convert Py_REFCNT and Py_SIZE to functions (GH-20429)
Convert Py_REFCNT() and Py_SIZE() macros to static inline functions.
They cannot be used as l-value anymore: use Py_SET_REFCNT() and
Py_SET_SIZE() to set an object reference count and size.

Replace &Py_SIZE(self) with &((PyVarObject*)self)->ob_size
in arraymodule.c.

This change is backward incompatible on purpose, to prepare the C API
for an opaque PyObject structure.
2020-05-27 14:55:10 +02:00
Pablo Galindo 1cf15af9a6 bpo-40217: Ensure Py_VISIT(Py_TYPE(self)) is always called for PyType_FromSpec types (reverts GH-19414) (GH-20264)
Heap types now always visit the type in tp_traverse. See added docs for details.

This reverts commit 0169d3003b.

Automerge-Triggered-By: @encukou
2020-05-27 02:03:38 -07:00
Serhiy Storchaka 578c3955e0
bpo-37999: No longer use __int__ in implicit integer conversions. (GH-15636)
Only __index__ should be used to make integer conversions lossless.
2020-05-26 18:43:38 +03:00
Serhiy Storchaka 1c5d1d7304
Remove duplicated words words (GH-20413) 2020-05-26 01:04:14 -07:00
Dong-hee Na ad3252bad9
bpo-39573: Convert Py_TYPE() to a static inline function (GH-20290) 2020-05-26 01:52:54 +09:00
Florian Dahlitz 30d5a7364d
bpo-40730: Remove redundant 'to' (GH-20316)
@ericvsmith I guess it is correct to merge it into master and not 3.9 directly?

Automerge-Triggered-By: @ericvsmith
2020-05-22 08:19:18 -07:00
Huon Wilson 8b62644831
bpo-40630: Add tracemalloc.reset_peak (GH-20102)
The reset_peak function sets the peak memory size to the current size,
representing a resetting of that metric. This allows for recording the
peak of specific sections of code, ignoring other code that may have
had a higher peak (since the most recent `tracemalloc.start()` or
tracemalloc.clear_traces()` call).
2020-05-22 16:18:51 +02:00
Raymond Hettinger bfaf5275ad
Restore missing column of digits (GH-20313) 2020-05-22 06:54:42 -07:00
Raymond Hettinger df2e0ff0d6
Update whatsnew benchmark results for 3.9 (GH-20276) 2020-05-20 18:43:51 -07:00
Christian Heimes e572c7f6db
bpo-40698: Improve distutils upload hash digests (GH-20260)
- Fix upload test on systems that blocks MD5
- Add SHA2-256 and Blake2b-256 digests based on new Warehous and twine
  specs.

Signed-off-by: Christian Heimes <christian@python.org>
2020-05-20 07:37:25 -07:00
karl ding 550f30c8f3
bpo-40291: Mention socket.CAN_J1939 in What's New (GH-20248)
This mentions the new CAN_J1939 implementation in the What's New
documentation for Python 3.9

Automerge-Triggered-By: @gvanrossum
2020-05-19 19:31:49 -07:00
Ned Deily 29251b787b
3.10 whatsnew needs to use blurb-produced changelog (GH-20213) 2020-05-19 07:39:29 -04:00
Kyle Stanley cc2bbc2227
bpo-32309: Implement asyncio.to_thread() (GH-20143)
Implements `asyncio.to_thread`, a coroutine for asynchronously running IO-bound functions in a separate thread without blocking the event loop. See the discussion starting from [here](https://github.com/python/cpython/pull/18410#issuecomment-628930973) in GH-18410 for context.

Automerge-Triggered-By: @aeros
2020-05-18 20:03:28 -07:00
Pablo Galindo d4fe098d1e
Python 3.10.0a0 (GH-20198) 2020-05-19 03:33:01 +01:00
Serhiy Storchaka 08b47c367a
bpo-40257: Revert changes to inspect.getdoc() (GH-20073) 2020-05-18 20:25:07 +03:00
Ned Deily 951ab58024
Revert "bpo-26317: Support OBJC and OBJCXX configure command line variables (GH-20176)" (GH-20182)
This reverts commit 0da5466650.

The commit is causing make failures on a FreeBSD buildbot.
Due to the imminent 3.9.0b1 cutoff, revert this commit for
now pending further investigation.
2020-05-18 11:31:21 -04:00
Ned Deily 0da5466650
bpo-26317: Support OBJC and OBJCXX configure command line variables (GH-20176)
Add support to the configure script for OBJC and OBJCXX command line options so that the macOS builds can use the clang compiler for the macOS-specific Objective C source files. This allows third-party compilers, like GNU gcc, to be used to build the rest of the project since some of the Objective C system header files are not compilable by GNU gcc.

Co-authored-by: Jeffrey Kintscher <websurfer@surf2c.net>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
2020-05-18 09:17:22 -04:00
Shantanu d17f3d8315
bpo-13601: Mention stderr's line buffering in What's New (GH-20168) 2020-05-17 22:07:57 -07:00
Paul Ganssle b17e49e0de
bpo-40503: Add documentation and what's new entry for zoneinfo (GH-20006)
This adds the documentation for the `zoneinfo` module added in PEP 615: https://www.python.org/dev/peps/pep-0615/

The implementation itself was GH-19909: https://github.com/python/cpython/pull/19909

bpo-40503: https://bugs.python.org/issue40503

Co-authored-by: Victor Stinner <vstinner@python.org>
2020-05-16 12:14:58 -04:00
Paul Ganssle 1b97b9b0ad
bpo-24416: Return named tuple from date.isocalendar() (GH-20113)
{date, datetime}.isocalendar() now return a private custom named tuple object
IsoCalendarDate rather than a simple tuple.

In order to leave IsocalendarDate as a private class and to improve what
backwards compatibility is offered for pickling the result of a
datetime.isocalendar() call, add a __reduce__ method to the named tuples that
reduces them to plain tuples. (This is the part of this PR most likely to cause
problems — if it causes major issues, switching to a strucseq or equivalent
would be prudent).

The pure python implementation of IsoCalendarDate uses positional-only
arguments, since it is private and only constructed by position anyway; the
equivalent change in the argument clinic on the C side would require us to move
the forward declaration of the type above the clinic import for whatever
reason, so it seems preferable to hold off on that for now.

bpo-24416: https://bugs.python.org/issue24416

Original PR by Dong-hee Na with only minor alterations by Paul Ganssle.

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>
2020-05-16 10:02:59 -04:00
Batuhan Taskaya 4541086232
bpo-40192: Use thread_cputime for time.thread_time to improve resolution (GH-19381)
On AIX, time.thread_time() is now implemented with thread_cputime()
which has nanosecond resolution, rather than
clock_gettime(CLOCK_THREAD_CPUTIME_ID) which has a resolution of 10 ms.
2020-05-16 11:39:09 +02:00
Christian Heimes 9b60e55db2
bpo-40637: Add option to disable builtin hashes (GH-20121)
Signed-off-by: Christian Heimes <christian@python.org>

Automerge-Triggered-By: @tiran
2020-05-15 14:54:53 -07:00
Lumír 'Frenzy' Balhar e77d428856
bpo-40495: compileall option to hardlink duplicate pyc files (GH-19901)
compileall is now able to use hardlinks to prevent duplicates in a
case when .pyc files for different optimization levels have the same content.

Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Victor Stinner <vstinner@python.org>
2020-05-14 16:17:22 +02:00
Victor Stinner d6fb53fe42
bpo-39465: Remove _PyUnicode_ClearStaticStrings() from C API (GH-20078)
Remove the _PyUnicode_ClearStaticStrings() function from the C API.
Make the function fully private (declare it with "static").
2020-05-14 01:11:54 +02:00
Inada Naoki d5d9a71866
bpo-36346: array: Don't use deprecated APIs (GH-19653)
* Py_UNICODE -> wchar_t
* Py_UNICODE -> unicode in Argument Clinic
* PyUnicode_AsUnicode -> PyUnicode_AsWideCharString
* Don't use "u#" format.

Co-authored-by: Victor Stinner <vstinner@python.org>
2020-05-11 15:37:25 +09:00
Javier Buzzi 627f701235
bpo-32117: Updated Simpsons names in docs (GH-19737)
`sally` is not a Simpsons character

Automerge-Triggered-By: @gvanrossum
2020-05-05 07:49:57 -07:00
Miro Hrončok 18f1c60a16
bpo-40360: Add a What's New entry for lib2to3 pending deprecation (GH-19898) 2020-05-04 12:02:00 -07:00
Victor Stinner e5963ee320
What's New in Python 3.9: Reorganize C API Changes (GH-19794)
Move Build Changes and C API Changes to the end of the document.
Most Python users don't build Python themselves and don't use the C
API. Other changes:

* Add Build Changes section
* Add sub-sections to the C API Changes
* Sort modules in Improved Modules section: move nntplib after
  multiprocessing
2020-04-29 17:57:25 +02:00
Victor Stinner 9a8c1315c3
bpo-40428: Cleanup free list part of C API Changes doc (GH-19793) 2020-04-29 16:56:30 +02:00
Victor Stinner 7036477323
bpo-40421: Add PyFrame_GetBack() function (GH-19765)
New PyFrame_GetBack() function: get the frame next outer frame.

Replace frame->f_back with PyFrame_GetBack(frame) in most code but
frameobject.c, ceval.c and genobject.c.
2020-04-29 03:28:46 +02:00
Victor Stinner ae00a5a885
bpo-40428: Remove PyTuple_ClearFreeList() function (GH-19769)
Remove the following function from the C API:

* PyAsyncGen_ClearFreeLists()
* PyContext_ClearFreeList()
* PyDict_ClearFreeList()
* PyFloat_ClearFreeList()
* PyFrame_ClearFreeList()
* PyList_ClearFreeList()
* PySet_ClearFreeList()
* PyTuple_ClearFreeList()

Make these functions private, move them to the internal C API and
change their return type to void.

Call explicitly PyGC_Collect() to free all free lists.

Note: PySet_ClearFreeList() did nothing.
2020-04-29 02:29:20 +02:00
Victor Stinner 8852ad4208
bpo-40429: PyFrame_GetCode() now returns a strong reference (GH-19773) 2020-04-29 01:28:13 +02:00
Victor Stinner a42ca74fa3
bpo-40421: Add PyFrame_GetCode() function (GH-19757)
PyFrame_GetCode(frame): return a borrowed reference to the frame
code.

Replace frame->f_code with PyFrame_GetCode(frame) in most code,
except in frameobject.c, genobject.c and ceval.c.

Also add PyFrame_GetLineNumber() to the limited C API.
2020-04-28 19:01:31 +02:00
Victor Stinner 7c59d7c986
bpo-40421: Add pyframe.h header file (GH-19755)
Add a new separated pyframe.h header file of the PyFrame public C
API: it is included by Python.h.

Add PyFrame_GetLineNumber() to the limited C API.

Replace "struct _frame" with "PyFrameObject" in header files.
PyFrameObject is now defined as struct _frame by pyframe.h which is
included early enough in Python.h.
2020-04-28 16:32:48 +02:00
Victor Stinner 9adccc1384
bpo-30966: Add multiprocessing.SimpleQueue.close() (GH-19735)
Add a new close() method to multiprocessing.SimpleQueue to explicitly
close the queue.

Automerge-Triggered-By: @pitrou
2020-04-27 09:11:10 -07:00
Dong-hee Na c5c42815ec
bpo-40375: Implement imaplib.IMAP4.unselect (GH-19712) 2020-04-27 23:52:55 +09:00
Guido van Rossum 0e80b561d4
bpo-40334: Add What's New sections for PEP 617 and PEP 585 (GH-19704) 2020-04-24 17:19:56 -07:00
Victor Stinner e6f8abd500
bpo-38061: subprocess uses closefrom() on FreeBSD (GH-19697)
Optimize the subprocess module on FreeBSD using closefrom().
A single close(fd) syscall is cheap, but when sysconf(_SC_OPEN_MAX)
is high, the loop calling close(fd) on each file descriptor can take
several milliseconds.

The workaround on FreeBSD to improve performance was to load and
mount the fdescfs kernel module, but this is not enabled by default.

Initial patch by Ed Maste (emaste), Conrad Meyer (cem), Kyle Evans
(kevans) and Kubilay Kocak (koobs):
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242274
2020-04-24 12:06:58 +02:00
sweeneyde a81849b031
bpo-39939: Add str.removeprefix and str.removesuffix (GH-18939)
Added str.removeprefix and str.removesuffix methods and corresponding
bytes, bytearray, and collections.UserString methods to remove affixes
from a string if present. See PEP 616 for a full description.
2020-04-22 23:05:48 +02:00
Batuhan Taşkaya 4454057269
bpo-39562: Prevent collision of future and compiler flags (GH-19230)
The constant values of future flags in the __future__ module
is updated in order to prevent collision with compiler flags.
Previously PyCF_ALLOW_TOP_LEVEL_AWAIT was clashing
with CO_FUTURE_DIVISION.
2020-04-22 18:09:03 +02:00
Kyle Stanley 9c82ea7868
bpo-34037: Add Python API whatsnew for loop.shutdown_default_executor() (#19634)
Co-Authored-By: Victor Stinner <vstinner@python.org>
2020-04-21 16:50:51 -04:00
Kyle Stanley 1ac6e37929
bpo-39207: Spawn workers on demand in ProcessPoolExecutor (GH-19453)
Roughly based on 904e34d4e6, but with a few substantial differences.

/cc @pitrou @brianquinlan
2020-04-19 07:00:59 -07:00
Serhiy Storchaka 7e64414f57
bpo-40257: Improve help for the typing module (GH-19546)
* Show docstring for special forms.
* Show docstring for special generic aliases.
* Show documentation for __origin__ for generic aliases.
2020-04-18 17:13:21 +03:00
Victor Stinner 9f5fe7910f
bpo-40286: Add randbytes() method to random.Random (GH-19527)
Add random.randbytes() function and random.Random.randbytes()
method to generate random bytes.

Modify secrets.token_bytes() to use SystemRandom.randbytes()
rather than calling directly os.urandom().

Rename also genrand_int32() to genrand_uint32(), since it returns an
unsigned 32-bit integer, not a signed integer.

The _random module is now built with Py_BUILD_CORE_MODULE defined.
2020-04-17 19:05:35 +02:00
Serhiy Storchaka fbf2786c4c
bpo-40257: Output object's own docstring in pydoc (GH-19479) 2020-04-15 23:00:20 +03:00
Batuhan Taşkaya 990ea4200f
bpo-40208: Remove deprecated has_exec method of SymbolTable (GH-19396) 2020-04-14 08:51:32 +09:00
Sebastian Pedersen a1a0eb4a39
bpo-39380: Change ftplib encoding from latin-1 to utf-8 (GH-18048)
Add the encoding in ftplib.FTP and ftplib.FTP_TLS to the
constructor as keyword-only and change the default from "latin-1" to "utf-8"
to follow RFC 2640.
2020-04-14 01:07:56 +02:00
Victor Stinner 14d5331eb5
bpo-40234: Revert "bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049)" (GH-19456)
This reverts commit 066e5b1a91.
2020-04-12 23:45:09 +02:00
mefistotelis 5fd8123dfd
bpo-39011: Preserve line endings within ElementTree attributes (GH-18468)
* bpo-39011: Preserve line endings within attributes

Line endings within attributes were previously normalized to "\n" in Py3.7/3.8.
This patch removes that normalization, as line endings which were
replaced by entity numbers should be preserved in original form.
2020-04-12 14:51:58 +02:00
Pablo Galindo f13072b8a8
bpo-40241: Add PyObject_GC_IsTracked and PyObject_GC_IsFinalized to the public C-API (GH-19461)
Add the functions PyObject_GC_IsTracked and PyObject_GC_IsFinalized to the public API to allow to query if Python objects are being currently tracked or have been already finalized by the garbage collector respectively.
2020-04-11 01:21:54 +01:00
Zackery Spytz 97e0de04b8
bpo-25780: Expose CAN_RAW_JOIN_FILTERS in the socket module (GH-19190)
Co-Authored-By: Stefan Tatschner <stefan@rumpelsepp.org>
2020-04-09 13:03:49 +01:00
Raymond Hettinger c63629e7c0
bpo-40197: Better describe the benchmark results table (GH-19386) 2020-04-05 18:53:06 -07:00
Serhiy Storchaka 6fed3c8540
bpo-40182: Remove the _field_types attribute of the NamedTuple class (GH-19368) 2020-04-05 00:43:20 +03:00
Victor Stinner 65a796e527
bpo-40094: Add os.waitstatus_to_exitcode() (GH-19201)
Add os.waitstatus_to_exitcode() function to convert a wait status to an
exitcode.

Suggest waitstatus_to_exitcode() usage in the documentation when
appropriate.

Use waitstatus_to_exitcode() in:

* multiprocessing, os, subprocess and _bootsubprocess modules;
* test.support.wait_process();
* setup.py: run_command();
* and many tests.
2020-04-01 18:49:29 +02:00
Zackery Spytz 975ac326ff
bpo-33262: Deprecate passing None for `s` to shlex.split() (GH-6514)
* bpo-33262: Deprecate passing None for `s` to shlex.split()

This reads the string to split from standard input.

* Update What's New.

* Fix shlex.rst
2020-04-01 09:58:55 -04:00
Zackery Spytz 676b105111
bpo-8901: Windows registry path is now ignored with the -E option (GH-18169) 2020-03-30 17:04:45 +01:00
Miro Hrončok 6467134307
bpo-36543: What's new: Document how to replace xml.etree.cElementTree (GH-19188) 2020-03-27 21:59:02 +02:00
Kyle Stanley b61b818d91
bpo-39812: Remove daemon threads in concurrent.futures (GH-19149)
Remove daemon threads from :mod:`concurrent.futures` by adding
an internal `threading._register_atexit()`, which calls registered functions
prior to joining all non-daemon threads. This allows for compatibility
with subinterpreters, which don't support daemon threads.
2020-03-27 20:31:22 +01:00
Ammar Askar 5a58c5280b
bpo-38237: Use divmod for positional arguments whatsnew example (GH-19171) 2020-03-27 16:37:43 +00:00
Victor Stinner 5c3cda0d1a
bpo-39947: Add PyThreadState_GetID() function (GH-19163)
Add PyThreadState_GetID() function: get the unique identifier of a
Python thread state.
2020-03-25 21:23:53 +01:00
Serhiy Storchaka bace59d8b8
bpo-39999: Improve compatibility of the ast module. (GH-19056)
* Re-add removed classes Suite, slice, Param, AugLoad and AugStore.
* Add docstrings for dummy classes.
* Add docstrings for attribute aliases.
* Set __module__ to "ast" instead of "_ast".
2020-03-22 20:33:34 +02:00
Dong-hee Na 05e4a296ec
bpo-40024: Add PyModule_AddType() helper function (GH-19088) 2020-03-22 17:17:34 +01:00
Victor Stinner 6723e933c4
bpo-39946: Remove _PyThreadState_GetFrame (GH-19094)
Remove _PyRuntime.getframe hook and remove _PyThreadState_GetFrame
macro which was an alias to _PyRuntime.getframe. They were only
exposed by the internal C API. Remove also PyThreadFrameGetter type.
2020-03-20 17:46:56 +01:00
Victor Stinner fd1e1a18fa
bpo-39947: Add PyThreadState_GetFrame() function (GH-19092)
Add PyThreadState_GetFrame() function: get the current frame
of a Python thread state.
2020-03-20 15:51:45 +01:00
Victor Stinner 5a3a71dddb
bpo-40010: Optimize signal handling in multithreaded applications (GH-19067)
If a thread different than the main thread gets a signal, the
bytecode evaluation loop is no longer interrupted at each bytecode
instruction to check for pending signals which cannot be handled.
Only the main thread of the main interpreter can handle signals.

Previously, the bytecode evaluation loop was interrupted at each
instruction until the main thread handles signals.

Changes:

* COMPUTE_EVAL_BREAKER() and SIGNAL_PENDING_SIGNALS() no longer set
  eval_breaker to 1 if the current thread cannot handle signals.
* take_gil() now always recomputes eval_breaker.
2020-03-19 17:40:12 +01:00
Victor Stinner 50e6e99178
bpo-39984: Move pending calls to PyInterpreterState (GH-19066)
If Py_AddPendingCall() is called in a subinterpreter, the function is
now scheduled to be called from the subinterpreter, rather than being
called from the main interpreter.

Each subinterpreter now has its own list of scheduled calls.

* Move pending and eval_breaker fields from _PyRuntimeState.ceval
  to PyInterpreterState.ceval.
* new_interpreter() now calls _PyEval_InitThreads() to create
  pending calls lock.
* Fix Py_AddPendingCall() for subinterpreters. It now calls
  _PyThreadState_GET() which works in a subinterpreter if the
  caller holds the GIL, and only falls back on
  PyGILState_GetThisThreadState() if _PyThreadState_GET()
  returns NULL.
2020-03-19 02:41:21 +01:00
Serhiy Storchaka 6b97598fb6
bpo-39988: Remove ast.AugLoad and ast.AugStore node classes. (GH-19038) 2020-03-17 23:41:08 +02:00
Victor Stinner 5b1ef200d3
bpo-39824: module_traverse() don't call m_traverse if md_state=NULL (GH-18738)
Extension modules: m_traverse, m_clear and m_free functions of
PyModuleDef are no longer called if the module state was requested
but is not allocated yet. This is the case immediately after the
module is created and before the module is executed (Py_mod_exec
function). More precisely, these functions are not called if m_size is
greater than 0 and the module state (as returned by
PyModule_GetState()) is NULL.

Extension modules without module state (m_size <= 0) are not affected.

Co-Authored-By: Petr Viktorin <encukou@gmail.com>
2020-03-17 18:09:46 +01:00
Batuhan Taşkaya 4ab362cec6
bpo-39638: Keep ASDL signatures in the AST nodes (GH-18515) 2020-03-16 10:12:53 +02:00
Batuhan Taşkaya 8689209e03
bpo-39969: Remove ast.Param node class as is no longer used (GH-19020) 2020-03-15 19:32:17 +00:00
Ross 61ac612e78
bpo-39507: Add HTTP status 418 "I'm a Teapot" (GH-18291) 2020-03-15 14:24:23 +02:00
Dong-hee Na da52be4769
bpo-39509: Update HTTP status code to follow IANA (GH-18294)
Add status codes 103 EARLY_HINTS and 425 TOO_EARLY.
2020-03-14 16:12:01 +02:00
Rahul Kumaresan 7a5cbc7298
bpo-39937: Improve suggestions for removal of getchildren and getiterator in changelog (GH-18937)
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
2020-03-14 11:20:24 +05:30
Victor Stinner 8fb02b6e19
bpo-39947: Add PyThreadState_GetInterpreter() (GH-18981)
Add PyThreadState_GetInterpreter(tstate): get the interpreter of a
Python thread state.
2020-03-13 23:38:08 +01:00
Victor Stinner be79373a78
bpo-39947: Add PyInterpreterState_Get() function (GH-18979)
* Rename _PyInterpreterState_Get() to PyInterpreterState_Get() and
  move it the limited C API.
* Add _PyInterpreterState_Get() alias to PyInterpreterState_Get() for
  backward compatibility with Python 3.8.
2020-03-13 18:15:33 +01:00
Victor Stinner 0b72b23fb0
bpo-38500: Add _PyInterpreterState_SetEvalFrameFunc() (GH-17340)
PyInterpreterState.eval_frame function now requires a tstate (Python
thread state) parameter.

Add private functions to the C API to get and set the frame
evaluation function:

* Add tstate parameter to _PyFrameEvalFunction function type.
* Add _PyInterpreterState_GetEvalFrameFunc() and
  _PyInterpreterState_SetEvalFrameFunc() functions.
* Add tstate parameter to _PyEval_EvalFrameDefault().
2020-03-12 23:18:39 +01:00
Raúl Cumplido 3c29675d87
bpo-1294959: Fix typo for new attribute platlibdir. (GH-18960)
Received email on the docs mailing list to fix a typo from `sys.platlitdir` which doesn't exist to the correct new attribute `sys.platlibdir`

Automerge-Triggered-By: @vstinner
2020-03-12 07:38:19 -07:00
Benjamin Peterson 051b9d08d1
closes bpo-39926: Update Unicode to 13.0.0. (GH-18910) 2020-03-10 20:41:34 -07:00
Serhiy Storchaka 13d52c2686
bpo-34822: Simplify AST for subscription. (GH-9605)
* Remove the slice type.
* Make Slice a kind of the expr type instead of the slice type.
* Replace ExtSlice(slices) with Tuple(slices, Load()).
* Replace Index(value) with a value itself.

All non-terminal nodes in AST for expressions are now of the expr type.
2020-03-10 18:52:34 +02:00
Victor Stinner 8510f43078
bpo-1294959: Add sys.platlibdir attribute (GH-18381)
Add --with-platlibdir option to the configure script: name of the
platform-specific library directory, stored in the new sys.platlitdir
attribute. It is used to build the path of platform-specific dynamic
libraries and the path of the standard library.

It is equal to "lib" on most platforms. On Fedora and SuSE, it is
equal to "lib64" on 64-bit systems.

Co-Authored-By: Jan Matějek <jmatejek@suse.com>
Co-Authored-By: Matěj Cepl <mcepl@cepl.eu>
Co-Authored-By: Charalampos Stratakis <cstratak@redhat.com>
2020-03-10 09:53:09 +01:00
Victor Stinner b4698ecfdb
bpo-39877: Deprecate PyEval_InitThreads() (GH-18892)
Deprecated PyEval_InitThreads() and PyEval_ThreadsInitialized().
Calling PyEval_InitThreads() now does nothing.
2020-03-10 01:28:54 +01:00
idomic fc72ab6913
bpo-38691: importlib ignores PYTHONCASEOK if -E is used (GH-18627)
The importlib module now ignores the PYTHONCASEOK
environment variable when the -E or -I command line
options are being used.
2020-03-09 12:57:53 +01:00
Brandt Bucher 8f13053692
bpo-39702: Update the Language Reference (PEP 614) (GH-18802) 2020-03-07 10:23:49 -08:00
Victor Stinner 942f7a2dea
bpo-39674: Revert "bpo-37330: open() no longer accept 'U' in file mode (GH-16959)" (GH-18767)
This reverts commit e471e72977.

The mode will be removed from Python 3.10.
2020-03-04 18:50:22 +01:00
Batuhan Taşkaya d82e469048
bpo-39639: Remove the AST "Suite" node and associated code (GH-18513)
The AST "Suite" node is no longer used and it can be removed from the ASDL definition and related structures (compiler, visitors, ...).

Co-Authored-By: Victor Stinner <vstinner@python.org>
Co-authored-by: Brett Cannon <54418+brettcannon@users.noreply.github.com>
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
2020-03-04 16:16:46 +00:00
Victor Stinner a6d3546d00
bpo-39674: Fix typo in What's New In Python 3.9 (GH-18776) 2020-03-04 15:11:43 +01:00
Victor Stinner 116fd4af73
bpo-39674: Suggest to test with DeprecationWarning (GH-18552)
Add a section in What's New In Python 3.9 to strongly advice to check
for DeprecationWarning in your Python projects.

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
2020-03-03 22:52:20 +01:00
MojoVampire 469325c30e
bpo-35712: Make using NotImplemented in a boolean context issue a deprecation warning (GH-13195) 2020-03-03 20:50:17 +02:00
Inada Naoki 2110551761
bpo-39775: inspect: Change Signature.parameters back to OrderedDict. (GH-18684) 2020-03-02 18:54:48 +09:00
Ananthakrishnan 1f0cd3c61a
bpo-39379: Remove reference to sys.path[0] being absolute path in whatsnew (GH-18561)
Remove reference to sys.path[0] being absolute path in whatsnew

Co-Authored-By: Kyle Stanley <aeros167@gmail.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Kyle Stanley <aeros167@gmail.com>
2020-02-29 17:55:22 +05:30
Brandt Bucher d0ca9bd93b
bpo-36144: Document PEP 584 (GH-18659) 2020-02-26 12:01:48 -08:00
opavlyuk 21da76d1f1
bpo-34788: Add support for scoped IPv6 addresses (GH-13772)
Automerge-Triggered-By: @asvetlov
2020-02-26 06:33:57 -08:00
Serhiy Storchaka 559e7f165a
bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments. (GH-18604)
* bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments.

* Simplify fast path.

* Difine lcm() without arguments returning 1.

* Apply suggestions from code review

Co-Authored-By: Mark Dickinson <dickinsm@gmail.com>

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-02-23 11:21:29 +00:00
ananthan-123 f2ee21d858
bpo-39479:Add math.lcm() function: Least Common Multiple (#18547)
* Update math.rst

* Update math.rst

* updated whats new

* Update test_math.py

* Update mathmodule.c

* Update mathmodule.c.h

* Update ACKS

* 📜🤖 Added by blurb_it.

* Update 3.9.rst

* Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst

* Update math.rst

* Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst

* Update test_math.py

* Update ACKS

* Update mathmodule.c.h

* Update mathmodule.c

* Update mathmodule.c.h

* Update mathmodule.c.h

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
2020-02-19 18:21:37 +00:00
Victor Stinner 4dee92b0ad
Revert "bpo-38691 Added a switch to ignore PYTHONCASEOK when -E or -I flags passed (#18314)" (GH-18553)
This reverts commit d83b6600b2.
2020-02-19 14:23:47 +01:00
Victor Stinner af5ee3ff61
bpo-39674: Revert "bpo-25988: Do not expose abstract collection classes in the collections module. (GH-10596)" (GH-18545)
This reverts commit ef092fe990.

Update collections __getattr__() and documentation to defer aliases
removal to Python 3.10.
2020-02-18 16:28:53 +01:00
idomic d83b6600b2
bpo-38691 Added a switch to ignore PYTHONCASEOK when -E or -I flags passed (#18314)
* Hard reset + cherry piciking the changes.

* 📜🤖 Added by blurb_it.

* Added @vstinner News

* Update Misc/NEWS.d/next/Library/2020-02-11-13-01-38.bpo-38691.oND8Sk.rst

Co-Authored-By: Victor Stinner <vstinner@python.org>

* Hard reset to master

* Hard reset to master + latest changes

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
2020-02-17 10:05:11 +01:00
Serhiy Storchaka 85a2eef473
bpo-32892: Update the documentation for handling constants in AST. (GH-18514) 2020-02-17 11:03:00 +02:00
Serhiy Storchaka f632736023
bpo-39545: Document changes in the support of await in f-strings. (GH-18456)
https://bugs.python.org/issue39545
2020-02-13 15:57:35 -08:00
Serhiy Storchaka 8c579b1cc8
bpo-32856: Optimize the assignment idiom in comprehensions. (GH-16814)
Now `for y in [expr]` in comprehensions is as fast as a simple
assignment `y = expr`.
2020-02-12 12:18:59 +02:00
Victor Stinner f3fda37468
bpo-38644: Rephrase What's New entry (GH-18461) 2020-02-11 17:50:10 +01:00
Hugo van Kemenade 29b3fc0a18
bpo-39586: Deprecate distutils bdist_msi command (GH-18415) 2020-02-10 14:26:40 +01:00
Victor Stinner 227af8e217
What's New in Python 3.9: sort improved modules (GH-18383) 2020-02-06 23:03:01 +01:00
Victor Stinner 2844336e6b
bpo-39542: Document limited C API changes (GH-18378) 2020-02-06 22:41:34 +01:00
Jakub Stasiak cf5b109dbb
bpo-39491: Merge PEP 593 (typing.Annotated) support (#18260)
* bpo-39491: Merge PEP 593 (typing.Annotated) support

PEP 593 has been accepted some time ago. I got a green light for merging
this from Till, so I went ahead and combined the code contributed to
typing_extensions[1] and the documentation from the PEP 593 text[2].

My changes were limited to:

* removing code designed for typing_extensions to run on older Python
  versions
* removing some irrelevant parts of the PEP text when copying it over as
  documentation and otherwise changing few small bits to better serve
  the purpose
* changing the get_type_hints signature to match reality (parameter
  names)

I wasn't entirely sure how to go about crediting the authors but I used
my best judgment, let me know if something needs changing in this
regard.

[1] 8280de241f/typing_extensions/src_py3/typing_extensions.py
[2] 17710b8798/pep-0593.rst
2020-02-04 17:10:19 -08:00
Baljak 2545fa8762
Fix MinGW library generation command (GH-17917)
To print the exports to stdout, the gendef command requires the option "-". Without this option, no output is generated.
2020-02-05 11:10:16 +11:00
Chris Withers b6999e5690
add whatsnew that was missed from 31d6de5aba (#18344) 2020-02-04 08:05:25 +00:00
Victor Stinner c6e5c1123b
bpo-39489: Remove COUNT_ALLOCS special build (GH-18259)
Remove:

* COUNT_ALLOCS macro
* sys.getcounts() function
* SHOW_ALLOC_COUNT code in listobject.c
* SHOW_TRACK_COUNT code in tupleobject.c
* PyConfig.show_alloc_count field
* -X showalloccount command line option
* @test.support.requires_type_collecting decorator
2020-02-03 15:17:15 +01:00
Kyle Stanley 339fd46cb7
bpo-39349: Add *cancel_futures* to Executor.shutdown() (GH-18057) 2020-02-02 13:49:00 +01:00
Andrew Svetlov 90d9ba6ef1
bpo-34793: Drop old-style context managers in asyncio.locks (GH-17533) 2020-02-01 13:12:52 +02:00
Victor Stinner c38fd0df2b
bpo-39353: binascii.crc_hqx() is no longer deprecated (GH-18276)
The binascii.crc_hqx() function is no longer deprecated.
2020-01-30 09:56:40 +01:00
fireattack 9bfb4a7061 Update 3.8.rst (GH-18173)
Fixed the name of the contributor (@selik).
2020-01-25 10:08:13 -05:00
Victor Stinner b8d1262e8a
bpo-39395: putenv() and unsetenv() always available (GH-18135)
The os.putenv() and os.unsetenv() functions are now always available.

On non-Windows platforms, Python now requires setenv() and unsetenv()
functions to build.

Remove putenv_dict from posixmodule.c: it's not longer needed.
2020-01-24 14:05:48 +01:00
Victor Stinner 161e7b36b1
bpo-39413: Implement os.unsetenv() on Windows (GH-18163)
The os.unsetenv() function is now also available on Windows.
2020-01-24 11:53:44 +01:00
Ammar Askar 2d5097663d bpo-39361: Document the removal of PyTypeObject.tp_print (GH-18125) 2020-01-24 11:35:01 +01:00
Victor Stinner b9783d2e03
bpo-39429: Add a new "Python Development Mode" doc page (GH-18132) 2020-01-24 10:22:18 +01:00
Pablo Galindo 99e6c260d6
bpo-17005: Add a class to perform topological sorting to the standard library (GH-11583)
Co-Authored-By: Tim Peters <tim.peters@gmail.com>
2020-01-23 15:29:52 +00:00
Dong-hee Na 1f0f102dec bpo-39366: Remove xpath() and xgtitle() methods of NNTP (GH-18035) 2020-01-23 00:59:43 +03:00
Victor Stinner b73dd02ea7
Revert "bpo-39413: Implement os.unsetenv() on Windows (GH-18104)" (GH-18124)
This reverts commit 56cd3710a1.
2020-01-22 21:11:17 +01:00
Victor Stinner beea26b57e
bpo-39353: Deprecate the binhex module (GH-18025)
Deprecate binhex4 and hexbin4 standards. Deprecate the binhex module
and the following binascii functions:

* b2a_hqx(), a2b_hqx()
* rlecode_hqx(), rledecode_hqx()
* crc_hqx()
2020-01-22 20:44:22 +01:00
Inada Naoki 5bbac8cbdf
bpo-39377: json: Update doc about the encoding option. (GH-18076)
Co-authored-by: Kyle Stanley <aeros167@gmail.com>
2020-01-22 19:01:24 +09:00
Victor Stinner 56cd3710a1
bpo-39413: Implement os.unsetenv() on Windows (GH-18104)
The os.unsetenv() function is now also available on Windows.

It is implemented with SetEnvironmentVariableW(name, NULL).
2020-01-21 16:13:09 +01:00
Victor Stinner 9baf242fc7
bpo-39357: Remove buffering parameter of bz2.BZ2File (GH-18028)
Remove the buffering parameter of bz2.BZ2File. Since Python 3.0, it
was ignored and using it was emitting a DeprecationWarning. Pass an
open file object to control how the file is opened.

The compresslevel parameter becomes keyword-only.
2020-01-16 15:33:30 +01:00
Victor Stinner 4691a2f2a2
bpo-39350: Remove deprecated fractions.gcd() (GH-18021)
Remove fractions.gcd() function, deprecated since Python 3.5
(bpo-22486): use math.gcd() instead.
2020-01-16 11:02:51 +01:00
Victor Stinner 210c19e3c5
bpo-39351: Remove base64.encodestring() (GH-18022)
Remove base64.encodestring() and base64.decodestring(), aliases
deprecated since Python 3.1: use base64.encodebytes() and
base64.decodebytes() instead.
2020-01-16 10:24:16 +01:00
Dong-hee Na 65a5ce247f bpo-39329: Add timeout parameter for smtplib.LMTP constructor (GH-17998) 2020-01-14 22:42:09 +01:00
Pablo Galindo a2ec3f07f7
bpo-39322: Add gc.is_finalized to check if an object has been finalised by the gc (GH-17989) 2020-01-14 12:06:45 +00:00
Dong-hee Na 62e3973395 bpo-39259: smtp.SMTP/SMTP_SSL now reject timeout = 0 (GH-17958) 2020-01-14 08:49:59 +01:00
Dong-hee Na a190e2ade1 bpo-39259: ftplib.FTP/FTP_TLS now reject timeout = 0 (GH-17959) 2020-01-13 20:34:34 +01:00
Victor Stinner c1ee6e5e9b
bpo-20443: Update What's New In Python 3.9 (GH-17986)
The sys.argv[0] change has been reverted.
2020-01-13 14:57:14 +01:00
Victor Stinner 0b2ab21956
bpo-39310: Add math.ulp(x) (GH-17965)
Add math.ulp(): return the value of the least significant bit
of a float.
2020-01-13 12:44:35 +01:00
Victor Stinner 100fafcf20
bpo-39288: Add math.nextafter(x, y) (GH-17937)
Return the next floating-point value after x towards y.
2020-01-12 02:15:42 +01:00
Dong-hee Na 1b335ae281 bpo-39259: nntplib.NNTP/NNTP_SSL now reject timeout = 0 (GH-17936)
nntplib.NNTP and nntplib.NNTP_SSL now raise a ValueError
if the given timeout for their constructor is zero to
prevent the creation of a non-blocking socket.
2020-01-11 18:39:15 +01:00
Dong-hee Na c39b52f152 bpo-39259: poplib now rejects timeout = 0 (GH-17912)
poplib.POP3 and poplib.POP3_SSL now raise a ValueError
if the given timeout for their constructor is zero to
prevent the creation of a non-blocking socket.
2020-01-10 15:34:05 +01:00
Dong-hee Na 13a7ee8d62 bpo-38615: Add timeout parameter for IMAP4 and IMAP4_SSL constructor (GH-17203)
imaplib.IMAP4 and imaplib.IMAP4_SSL now have an 
optional *timeout* parameter for their constructors.
Also, the imaplib.IMAP4.open() method now has an optional *timeout* parameter
with this change. The overridden methods of imaplib.IMAP4_SSL and
imaplib.IMAP4_stream were applied to this change.
2020-01-07 18:28:10 +01:00
Victor Stinner 5b23f7618d
bpo-39239: epoll.unregister() no longer ignores EBADF (GH-17882)
The select.epoll.unregister() method no longer ignores the EBADF
error.
2020-01-07 15:00:02 +01:00
Kyle Stanley 89aa7f0ede bpo-34790: Implement deprecation of passing coroutines to asyncio.wait() (GH-16977) 2019-12-30 13:50:19 +02:00