The non-GC-type branch of subtype_dealloc is using the type of an object after freeing in the same unsafe way as GH-26274 fixes. (I believe the old news entry covers this change well enough.)
https://bugs.python.org/issue44184
(cherry picked from commit 074e7659f2)
Co-authored-by: T. Wouters <thomas@python.org>
GH-23638 introduced a new test for Accept: headers in CGI HTTP servers. This test serializes all of os.environ on the server side. For non-UTF8 locales this can fail for some Unicode characters found in environment variables. This change fixes the HTTP_ACCEPT test.
(cherry picked from commit 82b218f36c)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Patch by Erik Welch.
bpo-19072 (GH-8405) allows `classmethod` to wrap other descriptors, but this does
not work when the wrapped descriptor mimics classmethod. The current PR fixes
this.
In Python 3.8 and before, one could create a callable descriptor such that this
works as expected (see Lib/test/test_decorators.py for examples):
```python
class A:
@myclassmethod
def f1(cls):
return cls
@classmethod
@myclassmethod
def f2(cls):
return cls
```
In Python 3.8 and before, `A.f2()` return `A`. Currently in Python 3.9, it
returns `type(A)`. This PR make `A.f2()` return `A` again.
As of GH-8405, classmethod calls `obj.__get__(type)` if `obj` has `__get__`.
This allows one to chain `@classmethod` and `@property` together. When
using classmethod-like descriptors, it's the second argument to `__get__`--the
owner or the type--that is important, but this argument is currently missing.
Since it is None, the "owner" argument is assumed to be the type of the first
argument, which, in this case, is wrong (we want `A`, not `type(A)`).
This PR updates classmethod to call `obj.__get__(type, type)` if `obj` has
`__get__`.
Co-authored-by: Erik Welch <erik.n.welch@gmail.com>
(cherry picked from commit b83861f026)
int | TypeVar('T') returns now an instance of types.Union
instead of typing.Union.
(cherry picked from commit a158b20019)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Both `executescript` methods contain the same docstring typo:
_"Executes a multiple SQL statements at once."_ => _"Executes multiple SQL statements at once."_
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
To my understanding, this is supposed to say "transaction".
See the relevant source:
a158b20019/Modules/_sqlite/connection.cGH-L1434-L1467
(cherry picked from commit 1ca27f2647)
Co-authored-by: Jack DeVries <58614260+jdevries3133@users.noreply.github.com>
Co-authored-by: Jack DeVries <58614260+jdevries3133@users.noreply.github.com>
if it is called with a sequence or set, but not list or tuple.
(cherry picked from commit f572cbf1fa)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* Fix issubclass() for None.
E.g. issubclass(type(None), int | None) returns now True.
* Fix issubclass() for virtual subclasses.
E.g. issubclass(dict, int | collections.abc.Mapping) returns now True.
* Fix crash in isinstance() if the check for one of items raises exception.
(cherry picked from commit 81989058de)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Fix incorrect handling of exceptions when interpreting dialect objects in
the csv module. Not clearing exceptions between calls to
PyObject_GetAttrString() causes assertion failures in pydebug mode (or with
assertions enabled).
Add a minimal test that would've caught this (passing None as dialect, or
any object that isn't a csv.Dialect subclass, which the csv module allows
and caters to, even though it is not documented.) In pydebug mode, the test
triggers the assertion failure in the old code.
Contributed-By: T. Wouters [Google]
(cherry picked from commit 0093876328)
Co-authored-by: T. Wouters <thomas@python.org>
Automerge-Triggered-By: GH:gpshead
Add testcleanup section to configparser and bz2 documentation which
removes temporary files created in the filesystem when 'make doctest'
is run.
(cherry picked from commit 48a5aa7f12)
Co-authored-by: Kevin Follstad <kfollstad@gmail.com>
* importlib.metadata is no longer provisional as of 3.10
* Add NEWS entry
(cherry picked from commit f6954cdfc5)
Co-authored-by: Barry Warsaw <barry@python.org>
Co-authored-by: Barry Warsaw <barry@python.org>
Fixes the misleading IsADirectoryError to be FileNotFoundError.
(cherry picked from commit 248173cc04)
Co-authored-by: andrei kulakov <andrei.avk@gmail.com>
As of 088a15c49d, lineno is None instead
of -1 if there is no line number.
Signed-off-by: Filipe Laíns <lains@riseup.net>.
(cherry picked from commit 91a8f8c16c)
Co-authored-by: Filipe Laíns <lains@riseup.net>
Co-authored-by: Filipe Laíns <lains@riseup.net>
In debug build failed tee.fromiterable() corrupted the linked list of all GC objects.
(cherry picked from commit f64de53ff0)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
(cherry picked from commit 17f94e2888)
Co-authored-by: andrei kulakov <andrei.avk@gmail.com>
* zlib uses an UINT32_MAX sliding window for the output buffer
These funtions have an initial output buffer size parameter:
- zlib.decompress(data, /, wbits=MAX_WBITS, bufsize=DEF_BUF_SIZE)
- zlib.Decompress.flush([length])
If the initial size > UINT32_MAX, use an UINT32_MAX sliding window, instead of clamping to UINT32_MAX.
Speed up when (the initial size == the actual size).
This fixes a memory consumption and copying performance regression in earlier 3.10 beta releases if someone used an output buffer larger than 4GiB with zlib.decompress.
Reviewed-by: Gregory P. Smith
(cherry picked from commit a9a69bb3ea)
Co-authored-by: Ma Lin <animalize@users.noreply.github.com>
