Enable recursion checks which were disabled when get __bases__ of
non-type objects in issubclass() and isinstance() and when intern
strings. It fixes a stack overflow when getting __bases__ leads
to infinite recursion.
Originally recursion checks was disabled for PyDict_GetItem() which
silences all errors including the one raised in case of detected
recursion and can return incorrect result. But now the code uses
PyDict_GetItemWithError() and PyDict_SetDefault() instead.
(cherry picked from commit 9ece9cd65c)
In the "Sequences (Tuples/Lists)" section, add
"How do you remove multiple items from a list".
(cherry picked from commit 5b0181d1f6)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
'Python Shell' may have contributed to some beginners confusing 'IDLE' with ' Python'.
(cherry picked from commit 05cc881cbc)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
The marker was added to the language in 3.8 and
3.7 only gets security patches.
(cherry picked from commit 40a0625792)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
* When the parameters argument is a list, correctly handle the case
of changing it during iteration.
* When the parameters argument is a custom sequence, no longer
override an exception raised in ``__len__()``.
(cherry picked from commit 0b419b7910)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
EnumMeta double-checks that `__repr__`, `__str__`, `__format__`, and `__reduce_ex__` are not the same as `object`'s, and replaces them if they are -- even if that replacement was intentionally done in the Enum being constructed. This patch fixes that.
Partially revert commit ac46eb4ad6662cf6d771b20d8963658b2186c48c:
"bpo-38113: Update the Python-ast.c generator to PEP384 (gh-15957)".
Using a module state per module instance is causing subtle practical
problems.
For example, the Mercurial project replaces the __import__() function
to implement lazy import, whereas Python expected that "import _ast"
always return a fully initialized _ast module.
Add _PyAST_Fini() to clear the state at exit.
The _ast module has no state (set _astmodule.m_size to 0). Remove
astmodule_traverse(), astmodule_clear() and astmodule_free()
functions..
(cherry picked from commit e5fbe0cbd4)
Co-authored-by: Victor Stinner <vstinner@python.org>
Fix a race condition in the call_soon_threadsafe() method of
asyncio.ProactorEventLoop: do nothing if the self-pipe socket has
been closed.
(cherry picked from commit 1b0f0e3d7d)
Co-authored-by: Victor Stinner <vstinner@python.org>
Argument script_exec_args is usually an absolute file name,
but twice has form ['-m', 'module_name'].
(cherry picked from commit 7e711ead26)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
The new link responds much faster and begins with a short explanation of the status of the doc.
(cherry picked from commit 06d0b8b67e)
Co-authored-by: Mark Roseman <mark@markroseman.com>
* Add failing test.
* bpo-29590: fix stack trace for gen.throw() with yield from (GH-NNNN)
When gen.throw() is called on a generator after a "yield from", the
intermediate stack trace entries are lost. This commit fixes that.
(cherry picked from commit 8b33961e4b)
Co-authored-by: Chris Jerdonek <chris.jerdonek@gmail.com>
Free the stack allocated in va_build_stack if do_mkstack fails
and the stack is not a small_stack
(cherry picked from commit 75c80b0bda)
Co-authored-by: Tony Solomonik <tony.solomonik@gmail.com>
* bpo-41696: Fix handling of debug mode in asyncio.run
This allows PYTHONASYNCIODEBUG or -X dev to enable asyncio debug mode
when using asyncio.run
* 📜🤖 Added by blurb_it.
Co-authored-by: hauntsaninja <>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 0770ad948c)
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Stopping and restarting a proactor event loop on windows can lead to
spurious errors logged (ConnectionResetError while reading from the
self pipe). This fixes the issue by ensuring that we don't attempt
to start multiple copies of the self-pipe reading loop.
(cherry picked from commit ea5a6363c3)
Co-authored-by: Ben Darnell <ben@bendarnell.com>
Co-authored-by: Ben Darnell <ben@bendarnell.com>
This program can segfault the parser by stack overflow:
```
import ast
code = "f(" + ",".join(['a' for _ in range(100000)]) + ")"
print("Ready!")
ast.parse(code)
```
the reason is that the rule for arguments has a simple recursion when collecting args:
args[expr_ty]:
[...]
| a=named_expression b=[',' c=args { c }] {
[...] }.
(cherry picked from commit 4a97b1517a)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
When allocating MemoryError classes, there is some logic to use
pre-allocated instances in a freelist only if the type that is being
allocated is not a subclass of MemoryError. Unfortunately in the
destructor this logic is not present so the freelist is altered even
with subclasses of MemoryError..
(cherry picked from commit 9b648a95cc)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* Fixed `f-string/str.format` error description when using two `,` in format specifier.
Co-authored-by: millefalcon <hanish0019@hmail.com>
(cherry picked from commit 0d6aa7f0ee)
Co-authored-by: han-solo <hanish0019@gmail.com>
Co-authored-by: han-solo <hanish0019@gmail.com>
Currently, if `asyncio.wait_for()` itself is cancelled it will always
raise `CancelledError` regardless if the underlying task is still
running. This is similar to a race with the timeout, which is handled
already.
(cherry picked from commit a2118a1462)
Co-authored-by: Elvis Pranskevichus <elvis@magic.io>
When I was fixing bpo-32751 back in GH-7216 I missed the case when
*timeout* is zero or negative. This takes care of that.
Props to @aaliddell for noticing the inconsistency.
(cherry picked from commit c517fc7121)
Co-authored-by: Elvis Pranskevichus <elvis@magic.io>
* bpo-40204: Allow pre-Sphinx 3 syntax in the doc (GH-21844)
Enable Sphinx 3.2 "c_allow_pre_v3" option and disable the
c_warn_on_allowed_pre_v3 option to make the documentation compatible
with Sphinx 2 and Sphinx 3.
(cherry picked from commit 423e77d6de)
* bpo-40204: Fix Sphinx sytanx in howto/instrumentation.rst (GH-21858)
Use generic '.. object::' to declare markers, rather than abusing
'.. c:function::' which fails on Sphinx 3.
(cherry picked from commit 43577c01a2)
* bpo-40204: Fix duplicates in the documentation (GH-21857)
Fix two Sphinx 3 issues:
Doc/c-api/buffer.rst:304: WARNING: Duplicate C declaration, also defined in 'c-api/buffer'.
Declaration is 'PyBUF_ND'.
Doc/c-api/unicode.rst:1603: WARNING: Duplicate C declaration, also defined in 'c-api/unicode'.
Declaration is 'PyObject* PyUnicode_Translate(PyObject *str, PyObject *table, const char *errors)'.
(cherry picked from commit 46d10b1237)
* bpo-40204: Add :noindex: in the documentation (GH-21859)
Add :noindex: to duplicated documentation to fix "duplicate object
description" errors.
For example, fix this Sphinx 3 issue:
Doc/library/configparser.rst:1146: WARNING: duplicate object
description of configparser.ConfigParser.optionxform, other instance
in library/configparser, use :noindex: for one of them
(cherry picked from commit d3ded08048)
* bpo-40204, doc: Fix syntax of C variables (GH-21846)
For example, fix the following Sphinx 3 errors:
Doc/c-api/buffer.rst:102: WARNING: Error in declarator or parameters
Invalid C declaration: Expected identifier in nested name. [error at 5]
void \*obj
-----^
Doc/c-api/arg.rst:130: WARNING: Unparseable C cross-reference: 'PyObject*'
Invalid C declaration: Expected end of definition. [error at 8]
PyObject*
--------^
The modified documentation is compatible with Sphinx 2 and Sphinx 3.
(cherry picked from commit 474652fe93)
* bpo-40204: Fix reference to terms in the doc (GH-21865)
Sphinx 3 requires to refer to terms with the exact case.
For example, fix the Sphinx 3 warning:
Doc/library/pkgutil.rst:71: WARNING: term Loader not found in case
sensitive match.made a reference to loader instead.
(cherry picked from commit bb0b08540c)
* bpo-40204: Fix duplicated productionlist names in the doc (GH-21900)
Sphinx 3 disallows having more than one productionlist markup with
the same name. Simply remove names in this case, since names are not
shown anyway. For example, fix the Sphinx 3 warning:
Doc/reference/introduction.rst:96: duplicate token description
of *:name, other instance in reference/expressions
(cherry picked from commit 1abeda80f7)
asyncio.AbstractEventLoop.run_in_executor should be a method that returns an asyncio Future, not an async method.
This matches the concrete implementations, and the documentation better.
(cherry picked from commit 29f84294d8)
Co-authored-by: James Weaver <james.barrett@bbc.co.uk>
[bpo-31122](): ssl.wrap_socket() now raises ssl.SSLEOFError rather than OSError when peer closes connection during TLS negotiation
Reproducer: http://tiny.cc/f4ztnz (tiny url because some bot keeps renaming b.p.o.-nnn as bpo links)
(cherry picked from commit 495bd03566)
Co-authored-by: Dima Tisnek <dimaqq@gmail.com>
Prior to this change, attempting to subclass the C implementation of
zoneinfo.ZoneInfo gave the following error:
TypeError: unbound method ZoneInfo.__init_subclass__() needs an argument
https://bugs.python.org/issue41025
(cherry picked from commit 87d8287865)
Co-authored-by: Paul Ganssle <paul@ganssle.io>
A message box pops up when an unexpected error stops the run process. Tell users it is likely a random glitch, but report it if not.
(cherry picked from commit f2e161c279)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
On Windows, fix asyncio recv_into() return value when the socket/pipe
is closed (BrokenPipeError): return 0 rather than an empty byte
string (b'').
(cherry picked from commit 602a971a2a)
Co-authored-by: Victor Stinner <vstinner@python.org>
This consolidates the handling of my_fgets return values, so that interrupts are always handled, even if they come after EOF.
I believe PyOS_StdioReadline is still buggy in that I/O errors will not result in a proper Python exception being set. However, that is a separate issue.
(cherry picked from commit a74eea238f)
Co-authored-by: Benjamin Peterson <benjamin@python.org>
Prevent installation on Windows 8 and earlier.
Download UCRT on demand when required (non-updated Windows 8.1 only)
Add reference to py launcher to post-install message
(cherry picked from commit 37a06cbe5c)
Co-authored-by: Steve Dower <steve.dower@python.org>
... when an unknown option is passed. TypeError was being raised because a 2to3 fix was missing.
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
(cherry picked from commit f1d40f941a)
Co-authored-by: Akuli <akuviljanen17@gmail.com>
On some platform such as VMware ESXi, DefaultSelector fails
to detect selector due to default value.
This fix adds a check and uses the correct selector depending upon
select implementation and actual call.
Fixes: [bpo-41182]()
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
(cherry picked from commit bcd47837a9)
Co-authored-by: Abhijeet Kasurde <akasurde@redhat.com>
The issue raised by recursive evaluation is infinite recursion with
recursive types. In that case, only the first recursive ForwardRef is
evaluated.
(cherry picked from commit 653f420b53)
Co-authored-by: wyfo <joperez@hotmail.fr>
PEP 563 was updated to change the release where `from __future__ import annotations` becomes the default (and only) behavior from 4.0 to 3.10. Update `__future__.py` and its docs to reflect this.
(cherry picked from commit 0028c14073)
Co-authored-by: YoSTEALTH <35307184+YoSTEALTH@users.noreply.github.com>
Fixes regression in 3.8.4 and 3.9.0b4.
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
(cherry picked from commit 0dd463c8a4)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
These changes updates the doc to comprehensively mention the behaviour of gather.cancel()
Automerge-Triggered-By: @asvetlov
(cherry picked from commit d42528a3a2)
Co-authored-by: Vinay Sharma <vinay04sharma@icloud.com>
Walk down the MRO backwards to find the type that originally defined the final `tp_setattro`, then make sure we are not jumping over intermediate C-level bases with the Python-level call.
Automerge-Triggered-By: @gvanrossum
(cherry picked from commit c53b310e59)
Co-authored-by: scoder <stefan_ml@behnel.de>
reject control chars in http method in http.client.putrequest to prevent http header injection
(cherry picked from commit 8ca8a2e8fb)
Co-authored-by: AMIR <31338382+amiremohamadi@users.noreply.github.com>
Avoid infinite loop when reading specially crafted TAR files using the tarfile module
(CVE-2019-20907).
(cherry picked from commit 5a8d121a1f)
Co-authored-by: Rishi <rishi_devan@mail.com>
Automerge-Triggered-By: @encukou
The issue is triggered by the bytearray() + bytearray() operation.
Detected by GCC 10 static analysis tool.
(cherry picked from commit 61fc23ca10)
Co-authored-by: stratakis <cstratak@redhat.com>
Keywords are present in the main module tab completion lists generated by rlcompleter, which is used by REPLs on *nix. Add all keywords to IDLE's main module name list except those already added from builtins (True, False, and None) . This list may also be used by Show Completions on the Edit menu, and its hot key.
Rewrite Completions doc.
Co-authored-by: Cheryl Sabella <cheryl.sabella@gmail.com>
(cherry picked from commit bce2eb4646)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
The running loop holder cache variable was always set to NULL when
calling set_running_loop.
Now set_running_loop saves the newly created running loop holder in the
cache variable for faster access in get_running_loop.
Automerge-Triggered-By: @1st1
(cherry picked from commit 529f42645d)
Co-authored-by: Tony Solomonik <tony.solomonik@gmail.com>
Serhiy Storchaka
Miss Islington (bot)
Łukasz Langa
Pablo Galindo
Ethan Furman
Victor Stinner
Karthikeyan Singaravelan
Terry Jan Reedy
Guido van Rossum
Steve Dower
Berker Peksag