repo stringclasses 1
value | instance_id stringlengths 20 22 | problem_statement stringlengths 126 60.8k | merge_commit stringlengths 40 40 | base_commit stringlengths 40 40 |
|---|---|---|---|---|
python/cpython | python__cpython-132389 | # Increase test coverage for HMAC
# Feature or enhancement
### Proposal:
After implementing HACL* HMAC in #99108, I've observed that I didn't test all code paths and that some tests I assumed were a bit incorrect (some redundancy was done). This is an issue to track all improvements done to HMAC tests (I'm planning ... | a1cd4ca7f46eafe61dc7f26692896a4a95c7e947 | 084d6dc122c761b90cba620eac2f25dc1660b7f1 |
python/cpython | python__cpython-132412 | # Segfault or failed assertion (`obj != NULL`) in `PyStackRef_FromPyObjectSteal`
# Crash report
### What happened?
It's possible to segfault or abort the interpreter with the following code:
```python
class WeirdDict(dict): pass
ns = {}
exec("def __create_fn__():\n return a", WeirdDict({None: None}), ns)
ns['__cre... | e6ef47ac229b5c4a62b9c907e4232e350db77ce3 | deda47d6e18d61e982045b795e3599838823db6a |
python/cpython | python__cpython-132387 | # Instance attr error suggestions can execute `__getattr__`
# Bug report
```python
>>> class A:
... def __getattr__(self, key):
... if key == 'foo': raise SystemExit('bye')
... def bar(self):
... foo
...
>>> A().bar()
bye
# interperter exits :(
```
Originally found by @millerdev ... | 641253cfac789e57c2b0c16047bdbf355535f60f | 20f8ed595d176d951a09eba045cd69ca62981b18 |
python/cpython | python__cpython-132357 | # test_pathlib - test_group_no_follow_symlinks resolves group name from uid rather than gid
# Bug report
### Bug description:
In Fedora 43 `test_group_no_follow_symlinks` started failing with a peculiar failure for Python 3.14 and Python 3.13:
```pytb
================================================================... | 3e1a47bdb468d02665c137d84dd44500a557b58b | f23052591a60f588c432795f1ac687e709d97386 |
python/cpython | python__cpython-132374 | # AsyncIO-Docs: Task.cancel return value not documented
# Documentation
The documentation of [`asyncio.Task.cancel`](https://docs.python.org/3/library/asyncio-task.html#asyncio.Task.cancel) does not mention that there is a return value of True/False. The return value functions like the one of [`asyncio.Future.cancel`... | 64b066ad298506f715647c9a2524c9fbbc764cc2 | f69b344e0944bd8d59d2dc4d98e988cc4dbfadf3 |
python/cpython | python__cpython-132352 | # Reference counting related regression in Python 3.14a7?
# Bug report
### Bug description:
Dear Python team,
I am the lead of the [nanobind](https://github.com/wjakob/nanobind) project, which is a C++<->Python binding tool. I always try to follow recent Python versions to react to any API/ABI changes and catch iss... | 3dbe02ccd3eefc48ac9fa14427bb4cdb82d1ebae | 9e5cebd56d06e35faeca166813215d72f2f8906a |
python/cpython | python__cpython-132332 | # `typestruct.h` is outdated compared to implementation
# Documentation
`Doc/includes/typestruct.h` contains a copy of `_typeobject` from `Include/cpython/object.h`, but it is currently outdated.
<!-- gh-linked-prs -->
### Linked PRs
* gh-132332
<!-- /gh-linked-prs -->
| e329f74e7d24be6ae1782b5ab90e20723aa47bcd | d687900f98114bb5910daad9553ae381d7daf94b |
python/cpython | python__cpython-132348 | # Test failures when hypothesis is available but cannot reach GitHub
# Bug report
### Bug description:
Hi, we recently started seeing several tests (namely `test_binascii`, `test_math_property`, `test_tools` and `test_zoneinfo`) to fail due to hypothesis warnings (which were recently turned into errors with https://... | fcf2d07228ada64bc864380cd8e3e304d9768caa | 65357032e80f8750dd102c82a8adc54de067fc38 |
python/cpython | python__cpython-132363 | # `TracebackException` swallows attributes of falsey Exception and falsey ExceptionGroup.
# Bug report
### Bug description:
# Description
```
import traceback as tb
class FalseyLenException(Exception):
def __len__(self):
return 0
class FalseyBoolException(Exception):
def __bool__(self):
re... | 69cda31261dd98b0462dc5ca63bdbcd0954dfa77 | 427e7fc099e61d9a3d1f04e2fbde8b749e5fcf0a |
python/cpython | python__cpython-132324 | # Inconsistent code found by static analyzers at base_events.py
Greetings! I've been analyzing Cpython with Svace static analyzer. It has found a code inconsitency issue at the `asyncio` library in the following method:
https://github.com/python/cpython/blob/7ebbd271444d89218870169624921b795a717470/Lib/asyncio/base_e... | a214db0c5406254d293f33622ce2cbd8233b52a5 | 1557da622c89985d14b781bef91e9aaa6e1f88c4 |
python/cpython | python__cpython-132306 | # Argument Clinic code is incompatible with older Python
Until recently I used Python 3.11 to regenerate Argument Clinic code. But `make clinic` stopped to work because Python code for some Argument Clinic converted uses syntax incompatible with 3.11. We should be conservative with Python code that is used to build P... | 487cf3c1702836dfce0025208b989853681d2cd9 | 4a919dd6eef1e5dbaddfd749f385f49cedc076a9 |
python/cpython | python__cpython-132286 | # `__annotate__` corner case when deleting `__annotations__`
Consider this example:
```python
>>> class A:
... def __annotate__(format):
... print(f'{format=}')
... return {'a': int}
...
>>> A.__annotations__
format=1
{'a': <class 'int'>}
>>> A.__annotations__
{'a': <class 'int'>}
... | 254110356d17204d2aebb9e74b6074cc6ef6382e | 1f5682f3a27516833f7c317707dd359280dba6e7 |
python/cpython | python__cpython-132329 | # Py_TYPE(lhs)->tp_as_mapping->mp_subscript is not the same as Dict_Type.tp_as_mapping->mp_subscript when it should be
A dict subclass which does not override `__getitem__` (like `collections.Counter`) should have `Dict_Type.tp_as_mapping->mp_subscript` as its `Py_TYPE(lhs)->tp_as_mapping->mp_subscript`, but they are... | a23ed8b3793aa684e312711cfda9c9fd76168399 | 5707837049e8eade92e29f20f055112821b75cd0 |
python/cpython | python__cpython-132345 | # [3.14] annotationlib - calling `get_annotations` on instances gets an unexpected error
# Bug report
### Bug description:
In 3.13, `inspect.get_annotations` would fail if called on instances and give you a `TypeError` explaining as much.
In 3.14 if you call `annotationlib.get_annotations(inst, format=Format.STRING... | 07b8d3117fdbc4e5be55aab0be428c278ec84e12 | e5f68fd29b3bd867207f23608a8dbc5759a056ed |
python/cpython | python__cpython-132258 | # Our GCC LTO flags can be improved
# Feature or enhancement
### Proposal:
@thesamesam pointed out to me that our GCC LTO configuration builds serially and as a single translation unit IIUC. This is the slowest configuration possible. On GCC 15, the LTO build takes 10m14.972s, in my first PR, it takes 2m28.287s. Thi... | bc0b94b30c9d65ba550daee2c2ef20035defd980 | 07b8d3117fdbc4e5be55aab0be428c278ec84e12 |
python/cpython | python__cpython-132251 | # `_ccall_callback` method of `_lsprof.Profiler` causes Fatal Python error
# Crash report
### What happened?
When a `_lsprof.Profiler` is enabled and a `TypeError` is raised from mismatching descriptor and target, a Fatal Python error happens due to `_ccall_callback ` returning a result with an exception set:
```py... | ab64130b572424695bf072f7608a536997dce14f | efd8aca62c214dde6115822a659403fb05340680 |
python/cpython | python__cpython-132247 | # Add PEP 688 special buffer methods to C API Type Object and Buffer Protocol docs
# Documentation
Two special methods, `__buffer__` and `__release_buffer__` were added to Python 3.12 by PEP-688. The C API Type Object documentation for slots includes `tp_as_buffer`, and sub-slots `bf_getbuffer`, `bf_releasebuffer` bu... | b529b60fc239d19245e5fafd0514d90097c2eb40 | d862b6de1bcff01229318d7138ddaab755723a43 |
python/cpython | python__cpython-132222 | # `dataclasses` docs do not mention that `kw_only` fields are ignored from `__match_args__`
# Bug report
# Documentation
Docs right now: https://docs.python.org/3.14/library/dataclasses.html#dataclasses.dataclass
```
match_args: If true (the default is True), the [__match_args__](https://docs.python.org/3.14/refere... | 8b62374b344f5da852bed9f16619736d4d43936b | e80ed2cf75384bab09e70f0f04d17e92183fdf12 |
python/cpython | python__cpython-132215 | # Data race between set_richcompare and frozenset_hash under free-threading
# Bug report
### Bug description:
We have the following TSAN report from coming JAX CI:
```
==================
WARNING: ThreadSanitizer: data race (pid=40645)
Read of size 8 at 0x7fffb6bdc1a0 by thread T6 (mutexes: read M0):
#0 set_... | ed99e28d5b5613f7c13691fd854195719d7bff1f | fd1b98dd1df14c8e4138d779166635c98926197b |
python/cpython | python__cpython-132212 | # Abort when using a tuple subclass instance as the `bases` parameter for `type`
# Crash report
### What happened?
The interpreter will abort when a new type is created using an instance of a subclass of `tuple` as the `bases` parameter due to a `PyTuple_CheckExact(bases)` assertion:
```python
class weird_tuple(tupl... | b6c552f9e614bab4acf21584baed997f57e74114 | e10fe81cc6ae0979938eb3925139d56a74c620e3 |
python/cpython | python__cpython-132175 | # Incorrect function name in error message of `_interpreters.run_string`
While working on https://github.com/python/cpython/pull/132173 I've noticed that this error message mentions the wrong function:
```python
>>> import _interpreters
>>> _interpreters.create()
1
>>> _interpreters.run_string(1, '')
Traceback (most ... | f2daa96c81a45b26bdcf3d5c3887cec02137974e | af8d1b95377917036aaedf18b9cc047d8877259c |
python/cpython | python__cpython-132173 | # Assertion failure calling `_interpreters.run_string` with a string subclass instance
# Crash report
### What happened?
It's possible to make the interpreter abort by calling `_interpreters.run_string` with an instance of a subclass of `str` as the `script` argument:
```python
import _interpreters
class weird_str... | 398071871066548954f4c51e8250d13b7c9659e0 | 895d983b5c9716aaaab34d14d278084b9b6730d8 |
python/cpython | python__cpython-132169 | # Add `__class_getitem__` support to `ctypes.py_object`
# Feature or enhancement
### Proposal:
[`ctypes.py_object`](https://docs.python.org/3/library/ctypes.html#ctypes.py_object) is [generic in typeshed](https://github.com/python/typeshed/blob/1c17cd429c2f91b0066547deb99c537af3e54d39/stdlib/ctypes/__init__.pyi#L253... | e2476398ee9911b6b0b80e3ca182647805fde81f | 0788948dcb980c7648b29ca363390b696d7f188f |
python/cpython | python__cpython-132164 | # Tests for Py_Universalnewlinefgets
Cover by tests Py_Universalnewlinefgets as mentioned at [TODO](https://github.com/python/cpython/blob/c0661df42ad20e488dbfa3e0fec22462833fc3d6/Lib/test/test_capi/test_file.py#L297)
<!-- gh-linked-prs -->
### Linked PRs
* gh-132164
<!-- /gh-linked-prs -->
| d7365e60500bea91383010a4bf9e26ff3acdfaa1 | 06a26fda607fb1a5e108cf82a0458c8ebf97f5d2 |
python/cpython | python__cpython-132160 | # Do not shadow user arguments in generated `__new__` by `@warnings.deprecated`
# Bug report
### Bug description:
Follow comment https://github.com/python/cpython/pull/132055#discussion_r2029062118
```python
from warnings import deprecated
@deprecated("MyMeta will go away soon")
class MyMeta(type):
def __new_... | 7bb1e1a23634bae81bf76fdb34e9f9f7e59b3793 | c0661df42ad20e488dbfa3e0fec22462833fc3d6 |
python/cpython | python__cpython-132248 | # `test.test_sys.TestRemoteExec` fails with `AssertionError`
# Bug report
### Bug description:
The test case `test_sys` failed when I ran `rt.bat test_sys`. The unittest report is as follow
```cmd
FAIL: test_remote_exec_raises_audit_event (test.test_sys.TestRemoteExec.test_remote_exec_raises_audit_event)
Test remot... | d6078ed6d0cb8745460769bbb5dd2392c91c2f55 | e294e161a86b325e634b001e1edafdb1cb7d40c4 |
python/cpython | python__cpython-132146 | # `typing.Union` does not support attribute assignment post gh-105511
# Bug report
### Bug description:
Before #105511, `typing.Union` is implemented in Python, and custom attributes can be assigned to a `Union` variable.
- #105511
```python
ta = Union[int, str]
ta.__some_attribute__ = (int, str)
```
However, aft... | dbfc6a417a5db237ff16a8a75f09c1bd5d5bd349 | 0dba59e6899cd0b1717e3c1dc6110b18c91b0f8f |
python/cpython | python__cpython-132135 | # Add .cache directory to .gitignore
# Bug report
### Bug description:
For now, there are many people use vscode + clangd to developer cpython. But the clangd will generate a `.cache` directory under the base directory and the behavior could not be customized. So I think maybe we can add the `.cache` to the `.giti... | 86804003ed70acbf8a2531c6784895d750c50456 | 85bc489b649fe261f9625163c684a69a470b3dc1 |
python/cpython | python__cpython-134085 | # Ensure that `multiprocessing.util.get_temp_dir()` can be used to create socket files with limited path length
# Bug report
### Bug description:
I must admit that this issue only happens in very specific conditions, namely when using the multiprocessing lib on a system where the temp folder is set to a long path by... | 1a07a01014bde23acd2684916ef38dc0cd73c2de | e1f891414b2329414a6160ed246f5f869a218bfd |
python/cpython | python__cpython-132122 | # pygettext: Always escape non-printable characters regardless of the `--escape` option
# Feature or enhancement
### Proposal:
For context: https://github.com/python/cpython/pull/131902#discussion_r2022611826
> [...] but I think that non-printable characters should always be escaped. The POT file should be human re... | a693eaa7104f3d2e42a3a1e0347775a3d2757b05 | 7bb1e1a23634bae81bf76fdb34e9f9f7e59b3793 |
python/cpython | python__cpython-132446 | # dataclasses.InitVar undocumented
# Documentation
dataclasses.InitVar is mentioned in https://docs.python.org/3.14/library/dataclasses.html#init-only-variables but not itself documented or linkable to
<!-- gh-linked-prs -->
### Linked PRs
* gh-132446
* gh-132483
<!-- /gh-linked-prs -->
| 281fc338fdf57ef119e213bf1b2c772261c359c1 | 1d97488c957f4595f8c3ea42e24c1995b23e39d4 |
python/cpython | python__cpython-132107 | # Allow logging.handlers.QueueListener to be used as a context manager
# Feature or enhancement
### Proposal:
This is a simple change that would allow:
```python
with QueueListener(queue, handler1) as listener:
# the listener has started
...
# the listener has stopped
```... | 517e96b9ed9f2b808ce499d01f6b5db5635218e3 | ad3bbe8fbcc9045c436b0c5e49b1aec018c59c2d |
python/cpython | python__cpython-132118 | # Inconsistency in handling Bluetooth addresses
# Bug report
1. The format accepted by BTPROTO_HCI protocol is incorrectly documented.
* it accepts a bytes object `bdaddr`, not a tuple.
* `bdaddr` is a bytes object, not a string.
2. Some protocols accept `bdaddr` as a string, others accept it as a bytes object.... | 1d97488c957f4595f8c3ea42e24c1995b23e39d4 | c7f6535e4a3b447fbd67bf98eea82fd243e780be |
python/cpython | python__cpython-131605 | # UBSan: runtime undefined behaviours when using `-fsanitize=undefined -fno-sanitize-recover`
# Bug report
### Bug description:
We finally managed to fix gh-111178, but this is assuming that Python is compiled with `-fsanitize=function`. When compiling Python as follows (with clang 18.1.8):
```sh
./configure \
-q ... | 50e518e886e6dde5542a2372d5b04acbdda4fc7d | ea23c897cd25702e72a04e06664f6864f07a7c5d |
python/cpython | python__cpython-132076 | # Possible use of unitialized socked address
# Bug report
New Bluetooth tests added in #132023 fail on Fedora based platforms. It looks that the `hci_channel` member of the `sockaddr_hci` structure is not initialized. This may be a cause of the failure.
On NetBSD and DragonFly `sockaddr_hci` is an alias of `sockaddr... | 345baa77ba2ce3b8ea8f2fad84754e5cc0b10938 | 255eb375a7cc3cb16698bebf42689e8bc783ed93 |
python/cpython | python__cpython-132195 | # `singledispatch.register` fails for `lru_cache` decorated functions
# Bug report
Function decorated with both `@singledispatch.register` and `@lru_chache` fails with a cryptic error message.
EDIT: In python 3.14a6. It works in python 3.9~3.13.
### Bug description:
```python
import sys
from functools import lru_c... | 4d3ad0467e5cb145b1f4bde4be5eb776946a4269 | a1cd4ca7f46eafe61dc7f26692896a4a95c7e947 |
python/cpython | python__cpython-132129 | # ProcessPoolExecutor swallows falsy Exceptions
# Bug report
### Bug description:
```python
import sys
import concurrent.futures
class MyException(Exception):
def __bool__(self):
return False
def raiser():
raise MyException("foo")
def main():
with concurrent.futures.ProcessPoolExecutor() as ... | 933c6653cba235b3af2250bb19713694b560c367 | c5e856a5dc8eed4813ecb8fbf4120411af9a6130 |
python/cpython | python__cpython-132056 | # Add `application/yaml` to `mimetypes`
### 1. Summary
It would be nice if Python will associate popular configuration extensions `.yaml` and `.yml` with the `application/yaml` media type.
### 2. Behavior
#### 2.1. Current
```python
>>> import mimetypes
>>> mimetypes.guess_file_type("KiraGoddess.yaml")
(None, None... | 132b6bc98f47a4d897dead8635b5a50a0baee485 | fee808936fd04e850a62c9610498bbb2360efd31 |
python/cpython | python__cpython-132039 | # test_perf_profiler test failure if installed perf version string contains commit hash
# Bug report
### Bug description:
In some installations, the installed `perf` version string may contain a commit hash, for example:
```sh
>perf --version
perf version 6.12.9.g242e6068fd5c
```
this causes the `test_perf_profile... | b6c92ec419cfa1e4483b072996bab403c9970a5d | 5518c2ae09cd8f135981f362dabd000d44d26cac |
python/cpython | python__cpython-132027 | # _MIPS_SIM comparison may contain undefined identifiers for _ABI
# Bug report
### Bug description:
```c
#include <Python.h>
```
When built on a MIPS architecture, `_MIPS_SIM` is used to determine [architecture specifics](https://wiki.debian.org/ArchitectureSpecificsMemo#Summary). The value is expected to match eit... | 6985e2e6dea67630cf13fc02b7ca727af383207b | 20be6ba61ac8a0a5d6242701c4186579cfa653f0 |
python/cpython | python__cpython-132048 | # Inconsistency in json.JSONEncoder Description Regarding skipkeys Behavior
> If skipkeys is false (the default), a [TypeError](https://docs.python.org/3.13/library/exceptions.html#TypeError) will be raised when trying to encode keys that are not [str](https://docs.python.org/3.13/library/stdtypes.html#str), [int](htt... | 403886c28ddb350bbcaea478f8d754ed14e10337 | f7305a06c7a322d23b39ad9d16af814d467624c6 |
python/cpython | python__cpython-132918 | # Error traceback when interrupting+terminating python
# Bug report
### Bug description:
How to reproduce:
- start python3
- interrupt with ^Z
- resume with `fg`
- immediately press ^D (EOF)
```python
$ python3
>>> ^Z
Stopped
$ fg
^D
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_mo... | e4561da886717ddd01ab0970452a14a1531e874d | d48616e08cbf069847026a2ee35017ad5cbe12a8 |
python/cpython | python__cpython-132014 | # TSAN race in frozenset_hash
# Bug report
### Bug description:
Frozenset's hash has code to cache the hash computation that is not thread-safe under free-threading:
https://github.com/python/cpython/blob/b0f77c4d250789fd1deaab4912919e2e6b89e583/Objects/setobject.c#L796
TSAN report from JAX test suite under Python ... | 76f6b5e64a8b6ea5a88606f3665cd9f52c2c2798 | b0f77c4d250789fd1deaab4912919e2e6b89e583 |
python/cpython | python__cpython-132018 | # Failed assertion in `_PyEval_EvalFrameDefault`: `self_o != NULL`
# Crash report
### What happened?
It's possible to make the interpreter exit with a failed assertion by running the following code:
```python
import difflib
obj = difflib.HtmlDiff(None, None, None, None,)
try:
for x in range(3):
obj._s... | c0661df42ad20e488dbfa3e0fec22462833fc3d6 | 42e3a8410b7dbc960b3b7c335f2bbb516c8caf6e |
python/cpython | python__cpython-132003 | # Segfault deallocating a `ContextVar` built with `str` subclass
# Crash report
### What happened?
Creating a `ContextVar` with an instance of a subclass of `str` leads to a segfault during its deallocation:
```python
from _contextvars import ContextVar
class weird_str(str):
def __eq__(self, other):
pa... | ab2a3dda1d3b6668162a847bf5b6aca2855a3416 | 87d9983994e9a423e9e0050b1bbee52ebaf84367 |
python/cpython | python__cpython-132000 | # The interpreter crashes when specializing bound method calls on unbound objects
# Crash report
### What happened?
The following code segfaults the interpreter:
```python
import glob
for x in range(3):
str_globber = glob._StringGlobber(None, None)
str_globber.selector(set())
try:
str_globber.selector([Tr... | ac3c439cdfee8452f2bcceacd67a1f4e423ac3cf | 3eda1460359c7e6af4c5b125a63388635a3ed477 |
python/cpython | python__cpython-131991 | # Compilation on Windows fails with assert in generated_cases.c.h
# Bug report
### Bug description:
Command line: `.\PCBuild\build.bat -p x64 -d -r`
```
python.c
python.vcxproj -> D:\Sources\_pythonish\cpython\PCbuild\amd64\python_d.exe
Assertion failed: WITHIN_STACK_BOUNDS(), file D:\Sources\_pythonish\cpyth... | cd69d55f64087f74da816eaf20c34ddeabfdb2bb | c2ac662f284b7c3f0701173f2467bf1e18aad2e2 |
python/cpython | python__cpython-131975 | # `ctypes.Pointer.get_contents` doesn't hold the object's lock for long enough
# Bug report
### Bug description:
As @kumaraditya303 [mentioned](https://github.com/python/cpython/pull/128490/files#r2022613718), `ctypes.Pointer.get_contents` has a thread safety bug that I missed when I originally fixed it. https://git... | 6e91d1f9aafc6e375092b8c14f6e30ebc74e4004 | 25275bda790e8a689092e83855d6d0574f26061b |
python/cpython | python__cpython-132126 | # Color in json.tool CLI
# Feature or enhancement
### Proposal:
apologies if this is not the right place to ask for enhancement requests. since python3.13 added support for colorization in repl, i was wondering if some basic colorization could be added for the python's cli json tool? jq[0] does this, the keys are b... | 71da68d5887b6c05890757d676b452ede3120617 | e7c5f60efc149dda3d3592fa2001f4583b128512 |
python/cpython | python__cpython-131944 | # Use the Python-specific `Py_DEBUG` macro rather than `_DEBUG` in Windows-related C code
Follow the discussion at https://github.com/python/cpython/pull/131799#discussion_r2021223342.
Currently, the Windows-related C code is mixed using the Python-specific `Py_DEBUG` macro and non-Python-specific `_DEBUG` macro.
Th... | f0f93ba5fa53ef5724250dd9f791d89abca04fa7 | e15bbfafbcc9153fa0b05beb806984e288fdefe4 |
python/cpython | python__cpython-131972 | # Update `Element.remove` exception message when an element is not found
### Proposal:
In `xml.etree.ElementTree.Element.remove`, the exception message is `"list.remove(x): x not in list"`. It was suggested to change it to `"Element.remove(x): x not in list"` (https://github.com/python/cpython/pull/126124#discussion_... | 04bc681e7cf5b7effd99e676b7deceb27fb34434 | df59226997e067adcfa1bc8d045b7cc1de08906c |
python/cpython | python__cpython-131941 | # 3.14 regression: `Union[int, str] is Union[int, str]` does not hold
# Bug report
### Bug description:
### Python 3.13.2
```pycon
>>> from typing import Union
>>> Union[int, str] is Union[int, str]
True
```
### Python 3.14.0a6
```pycon
>>> from typing import Union
>>> Union[int, str] is Union[int, str]
False
```... | 7473c600a5890ffd87e8761c418bf3312ce7f38c | ac3a7bfeccb752a59d88861e45b454db360aa69d |
python/cpython | python__cpython-131993 | # Compilation emits multiple warnings in the finally block
# Bug report
This code produces two `SyntaxWarning`s in the new REPL:
```python
>>> def some():
... try:
... return 1
... finally:
... return 2
...
<python-input-14>:5: SyntaxWarning: 'return' in a 'finally' block
<python-inp... | 3d08c8ad20dfabd4864be139cd9c2eb5602ccdfe | d4e2cdc15bdfe84486b885eca885c44bc378fc41 |
python/cpython | python__cpython-132453 | # Add `multiprocessing.Process.interrupt`
# Feature or enhancement
### Proposal:
We have `.terminate()` and `.kill()` but not `.interrupt()` for terminating `multiprocessing.Process`. I believe the latter could be a useful addition when we have a python subprocess that we want to terminate in a "normal" way: i.e. tr... | 77605fa3bb4e380d5448665f70d73c8d3fcc2e75 | 862fd890361005598a6f4614ea0608c8447831c2 |
python/cpython | python__cpython-132030 | # Move description of grouping options in format specification docs
The form of format specifier is the following
```
[[fill]align][sign]["z"]["#"]["0"][width][grouping_option]["." precision][type]
```
Docs describe each option in the following order:
1. `align` and `fill`.
2. `sign`.
3. Option `z`.
4. Option `#`.
5.... | 06a110f5227ba9d52f6205fde55924a14cab36ff | ac14d4a23f58c1f3e1909753aa17c1c302ea771d |
python/cpython | python__cpython-132022 | # CPython fails to compile when the internal `Py_STACKREF_DEBUG` macro is defined
# Bug report
### Bug description:
When the `Py_STACKREF_DEBUG` macro is defined here:
https://github.com/python/cpython/blob/c432d0147bdf1a66604e7a3d6a71660ae79b5f45/Include/internal/pycore_structs.h#L57-L58
CPython fails to compile:... | 275056a7fdcbe36aaac494b4183ae59943a338eb | b3e3cc054c2c7718c0ad7c4690f76716649a2588 |
python/cpython | python__cpython-131903 | # Tail-calling interpreter `configure` failures on x86_64/aarch64 apple-darwin/clang
# Bug report
### Bug description:
The configure step fails. I've rerun it once but it still failed.
- https://github.com/python/cpython/actions/runs/14138795354/job/39616444240#step:6:232
- https://github.com/python/cpython/actions... | 39fa19a4ccb4c75d2421187e5b8d83c73b48ca4d | 2c3e3fe54ce9aaa57b1e870c450d4cad4db4b208 |
python/cpython | python__cpython-131889 | # intermittent ResourceWarning in test_ftplib
Hi! The buildbot **PPC64LE Fedora Stable LTO 3.13** (tier-2) has failed when building commit 07d4c7e7dbdb4e676acab386d1a5bf8e4ac16898.
You can take a look at the buildbot page here:
https://buildbot.python.org/#/builders/1492/builds/501
Summary of the results of the ... | b0f77c4d250789fd1deaab4912919e2e6b89e583 | ab2a3dda1d3b6668162a847bf5b6aca2855a3416 |
python/cpython | python__cpython-132200 | # `json.dump()` with `indent` and `skipkeys` can be formatted incorrectly
# Bug report
### Bug description:
```python
>>> import json
>>> print(json.dumps({b"": 0}, indent=4, skipkeys=True))
{
}
```
Related: #123183
### CPython versions tested on:
3.13
### Operating systems tested on:
Windows
<!-- gh-link... | ec12559ebafca01ded22c9013de64abe535c838d | 485b499610eefe362faf171f258b3a3588378ff1 |
python/cpython | python__cpython-131901 | # New REPL on Windows exits when accented character is pasted/typed
# Crash report
### What happened?
When pasting an accented character like ñ or é, or typing one such as ´p and pressing Enter, then up arrow, the new REPL on Windows will exit with the following error:
```python
Python 3.14.0a6+ (heads/fix_non_stri... | 0c5151bc81ec8e8588bef4389df12a9ab50e9fa0 | d6078ed6d0cb8745460769bbb5dd2392c91c2f55 |
python/cpython | python__cpython-131866 | # Systemtap on linux does not properly apply hardening CFLAGS when compiling using --with-dtrace
# Bug report
### Bug description:
When compiling using --with-dtrace, Linux uses the systemtap script which utilizes a common default CFLAGS set to provide the object file. When extra hardening flags are passed during th... | 0cd4befb02df07c0b320cd6246227c13e57b2efb | 51e0f2b06c042b8742145ce094323a34b61f02aa |
python/cpython | python__cpython-131854 | # `msgfmt.py`: Test validity of generated file
# Feature or enhancement
### Proposal:
Test the header of the binary .mo file is generated correctly and is as expected for example the start of a `msgfmt.py` generated file:
```
de12 0495 0000 0000 0900 0000 1c00 0000
6400 0000 0000 0000 0000 0000 0000 0000
```
de12 0... | fccf9ab33d0b16e6171c533d139b6118503197c1 | be2d2181e62cd138b0cdf80ebc0dd4058187c52a |
python/cpython | python__cpython-131880 | # `msgfmt.py`: Handling of header inconsistent with GNU `msgfmt`
# Bug report
### Bug description:
Running our current tests with a GNU generated `general.mo` we have a failure:
<details>
```python
SubTest failure: Traceback (most recent call last):
File "/home/stan/PycharmProjects/cpython/Lib/unittest/case.py",... | ad6a032cebf59d1668caa7e726aa5da72e1cbb5c | 376631829aab72e320e19102fc55cbca5af8c733 |
python/cpython | python__cpython-131833 | # Implement PEP 758 – Allow except and except* expressions without parentheses
See PEP-758
<!-- gh-linked-prs -->
### Linked PRs
* gh-131833
<!-- /gh-linked-prs -->
| c2ac662f284b7c3f0701173f2467bf1e18aad2e2 | 053c285f6b41f92fbdd1d4ff0c959cceefacd7cd |
python/cpython | python__cpython-136270 | # Fix sqlite timezone-naive adapter recipe
# Documentation
This recipe for an adapter does not work as advertised:
```
def adapt_datetime_iso(val):
"""Adapt datetime.datetime to timezone-naive ISO 8601 date."""
return val.isoformat()
```
from: https://github.com/erlend-aasland/cpython/blob/a3711d15... | 6a6cd3c07c0300c8799878a48d555470be2a52f7 | 3c43df4dbdb0a41b8e5503b7fa4741a29b6007e0 |
python/cpython | python__cpython-131819 | # `python -I`'s help message missing imply `-P`
# Feature or enhancement
### Proposal:
According to the [doc](https://docs.python.org/3/using/cmdline.html#cmdoption-I),
> -I Run Python in isolated mode. This also implies [-E](https://docs.python.org/3/using/cmdline.html#cmdoption-E), [-P](https://docs.python.org/3/... | 8bd88e2827b2a887c2ea8e5ed0c0575704bfacdf | af2afd7c224389856e118d3f544c9621a016599f |
python/cpython | python__cpython-132192 | # Please upgrade bundled Expat to 2.7.1
# Bug report
### Bug description:
Hi! 👋
Please upgrade bundled Expat to 2.7.1 (e.g. for the fix to what can be argued a [regression](https://github.com/libexpat/libexpat/issues/980) that came with the fix for CVE-2024-8176 in Expat 2.7.0).
* GitHub release: https://github.c... | c0de6500249469e6fc5b458d6afb6bad1b6755cd | f0dcb29d3affbbe1ec25b922235f0556bd695067 |
python/cpython | python__cpython-131808 | # ResourceWarning in test.test_ucn.UnicodeNamesTest.test_named_sequences_full (when http request 404s)
# Bug report
### Bug description:
```
$ PYTHONTRACEMALLOC=25 ./python -Walways -m unittest test.test_ucn -vvv
test_aliases (test.test_ucn.UnicodeNamesTest.test_aliases) ... ok
test_aliases_names_in_pua_range (test.... | adb67ed7e465410829ac0b1f903ec5678e0e51cc | 27d1443897daff65e8a42269b591097f29d310c6 |
python/cpython | python__cpython-131859 | # `signal.set_wakeup_fd` does not work unless you register a no-op signal handler for the relevant signal
# Bug report
### Bug description:
Consider this program that uses `signal.signal.set_wakeup_fd`:
`demo.py`:
```python
import os
import signal
import struct
pipe_r, pipe_w = os.pipe()
os.set_blocking(pipe_w, ... | 939476bbbb57ec3348c60df7c8f67c92038c8c89 | 8768df2fe94a8444baff47a5b8c7414a2118731a |
python/cpython | python__cpython-131783 | # Cast error with _Py_TryIncrefCompareStackRef and -Wc++11-narrowing
# Bug report
### Bug description:
The current `main` branch fails to build if the `-Wc++11-narrowing` option is used:
```
internal/pycore_stackref.h:649:39: error: non-constant-expression cannot be narrowed from type 'intptr_t' (aka 'long') to 'uin... | c824d8e6f96a2c36c9f955f3be6138caaae35bfa | 151d1bfd1bb7ca9a36bb0f2bd6df53d64a1ba2f2 |
python/cpython | python__cpython-131844 | # Parser stack overflow on WASI with `--with-pydebug`
# Bug report
### Bug description:
```pytb
$ python Tools/wasm/wasi.py configure-build-python -- --with-pydebug
...
$ python Tools/wasm/wasi.py make-build-python
...
$ python Tools/wasm/wasi.py configure-host -- --with-pydebug
...
$ python Tools/wasm/wasi.py make-... | 6ab4acecf91413fccd39f78ff14775d83498dab5 | 0dbaeb94a8b39972ebda7782b50bb49488951e3c |
python/cpython | python__cpython-131765 | # Unnecessary NULL check for `code->_co_monitoring` in `remove_tools`
If [monitoring](https://github.com/python/cpython/blob/ac12de2e6a6f5c1da83de0412bb7d03c28fdab63/Python/instrumentation.c#L837) variable is equal to NULL then we'll get segmentation fault in
[line 843](https://github.com/python/cpython/blob/ac12de2e... | 151d1bfd1bb7ca9a36bb0f2bd6df53d64a1ba2f2 | 52b5eb95b770fa00ebbd449ba40cab4a0e7c7df7 |
python/cpython | python__cpython-131764 | # Dereferencing the pointer 'parser_token->metadata' with a NULL value
After having been assigned to a NULL value
https://github.com/python/cpython/blob/ac12de2e6a6f5c1da83de0412bb7d03c28fdab63/Parser/pegen.c#L194
pointer 'parser_token->metadata' is passed as 3rd parameter in call to function 'Py_DECREF':
https://git... | 2c686a9ac243800b630d4a09622c8eb789f5b354 | 67fbfb42bd5dfe861d0c58d9e6c48d8eef033d24 |
python/cpython | python__cpython-131758 | # functools.lru_cache prevents function being cached from executing concurrently under free-threading
# Feature or enhancement
### Proposal:
`functools.lru_cache` was made free-thread safe but is not so in an efficient way. It works currently by serializing the function being cached and preventing it from executing ... | 4c12a2db15639fe1b28f1f0f807a18fb7b71d851 | 45c447bf91ffabe4c0ba6d18f37d4e58925d5c91 |
python/cpython | python__cpython-131742 | # "What's new" notes for 3.12 don't mention `platform` changes regarding Windows 11 detection
# Documentation
Python 3.12 updated `platform` to the (at the time) latest state, which added platform string changes to support Windows 11. We have code that was written prior to 3.12's release that worked around `platform`... | b9ca438daab6a4e2513ab38171e94c75da03d6e3 | 2d83891dfd51f595de68b0336b3bfc876f7b2507 |
python/cpython | python__cpython-131744 | # PyUnstable_GC_VisitObjects should traverse the permanent generation as well
# Bug report
### Bug description:
This function is meant to walk the heap and visit all GCable objects. It currently ignores the permanent / frozen generation, which is a problem when calling code expects to get all extant objects.
As a ... | 7bb41aef4b7b8f3c3f07c11b801c5b7f8afaac7f | a26a301f8b09c1825b288fc8649f8174576361f4 |
python/cpython | python__cpython-131737 | # optimize any/all/tuple calls with a generator expression arg
See discussion in https://github.com/faster-cpython/ideas/issues/545.
<!-- gh-linked-prs -->
### Linked PRs
* gh-131737
<!-- /gh-linked-prs -->
| 2c8f329dc634290fb88636f85c05e473bc0104d5 | 674dbf3b3a72bd3d17298c2ead79f32edcff774a |
python/cpython | python__cpython-131739 | # Only do seclevel workaround if seclevel greater than 1
# Feature or enhancement
### Proposal:
We propose checking libssl's current security level before performing [our ubuntu workaround](https://github.com/python/cpython/blob/main/Lib/test/test_ssl.py#L153) in `test_ssl.py`, and skipping the workaround if it's un... | 3b3720f1a26ab34377542b48eb6a6565f78ff892 | 23a658b9af410b72beeb28ba4ace2d83896c5631 |
python/cpython | python__cpython-131732 | # Generated interpreter does not spill the correct value of the stack pointer for output arrays.
# Bug report
### Bug description:
The generated C code for `UNPACK_SEQUENCE_TUPLE` saves the stack pointer before increasing it to account for the output array. This could result in some of the items being prematurely de... | 1b8bb1ed0c4243796af531a35de982bc4f028215 | b9ca438daab6a4e2513ab38171e94c75da03d6e3 |
python/cpython | python__cpython-136814 | # http.client._MAXHEADERS = 100 limit no longer sufficient
# Bug report
### Bug description:
This hard-coded sanity check for HTTP response headers is no longer sufficient to fetch a Microsoft 365 page.
https://github.com/python/cpython/blob/0a91456ad14bb598646f50bf8f034e8887c0c468/Lib/http/client.py#L112
I do h... | 958657bbc3351c66dd8e319503675521bfdea49a | 18a7f5dad832488e8965fe29159a62abc18368e2 |
python/cpython | python__cpython-131720 | # _PyMem_FreeDelayed() missing a NULL pointer check
# Bug report
### Bug description:
Normally this is not a problem but if `_PyMem_FreeDelayed(NULL)` is called an (quite!) improbably high number of times in a single thread it can lead to memory exhaustion because the NULL is added to a queue. Fix is just to add a N... | 0a91456ad14bb598646f50bf8f034e8887c0c468 | 44605aa93d31d6dff64dab96126942f94cf1dfe9 |
python/cpython | python__cpython-131759 | # `_suggestions` module missing on Windows, untested
# Bug report
### Bug description:
The `_suggestions` module isn't available in Windows builds because it's missing from `PC/config.c`. Since it's not tested and only imported in `traceback.py` in a `try:` block guarding against `ImportError`, it's easy to not dete... | 9ef9d687ff7cfc4bbf422ba61db04207b7f343d2 | d836d287a7bd1392f6d011888a7469854b0f4325 |
python/cpython | python__cpython-131713 | # Using a null pointer in set_tp_mro
https://github.com/python/cpython/blob/6fb5f7f4d9d22c49f5c29d2ffcbcc32b6cd7d06a/Objects/typeobject.c#L1673
In the **mro_hierarchy** function the **old_mro** variable can get a null value from the **mro_internal** call. [There is a check for NULL](https://github.com/python/cpython/... | 44605aa93d31d6dff64dab96126942f94cf1dfe9 | f1967e72498209e42f7cf5eeff0cd84d1ec10d18 |
python/cpython | python__cpython-131708 | # RuntimeWarning in test_coroutines.CoroutineTest.test_await_17
# Bug report
### Bug description:
```
test_await_17 (test.test_coroutines.CoroutineTest.test_await_17) ... Warning -- Unraisable exception
Exception ignored while finalizing coroutine <coroutine object CoroutineTest.test_await_17.<locals>.A.__anext__ at... | 6fb5f7f4d9d22c49f5c29d2ffcbcc32b6cd7d06a | 7d9442f0d55a7169940b9371d6e58a7c2ec1fa8a |
python/cpython | python__cpython-131730 | # clang-cl on Windows incorrectly compiles SEH (structured exception handling)
# Bug report
### Bug description:
clang-cl incorrectly handles SEH exception handling: https://github.com/llvm/llvm-project/issues/62606
E.g. in
https://github.com/python/cpython/blob/7c3692fe275088e986f92cec34dcccb823b31fa2/Modules/mmapm... | 488174dc68f90217fd43aa95d87441cc6bad6a29 | 90b82f2b61219c8f94e2deddc989a4c4fe9ea7c7 |
python/cpython | python__cpython-131690 | # Windows tail-call CI does not run the test cases
Excerpts from here https://github.com/python/cpython/pull/131526#issuecomment-2745152513:
See e.g. https://github.com/python/cpython/actions/runs/14006628024/job/39221297660 and https://github.com/python/cpython/actions/runs/13954576580/job/39062383429#step:4:326.
A... | ce77da5871334bffea722984cb705fd20a763a1f | adb67ed7e465410829ac0b1f903ec5678e0e51cc |
python/cpython | python__cpython-131679 | # Flaky test `test_lru_cache_threaded3`
# Bug report
Seen locally. The `with self.subTest():` is not safe to call from multiple threads concurrently because `subTest` modifies `self._subtest`, so you might end up with the wrong or `None` subtest in the call to `testPartExecutor`.
https://github.com/python/cpython/bl... | a1232459860235f4fb7896cc95966d87a51cbe32 | 7c3692fe275088e986f92cec34dcccb823b31fa2 |
python/cpython | python__cpython-131784 | # build: big endian ARM builds fail with mimalloc enabled
# Bug report
### Bug description:
Preface: I'm aware that big-endian ARM is not listed in PEP 11 where it's assumed that binaries are little endian by default.
I wrote an upstream issue to track this as well: https://github.com/microsoft/mimalloc/issues/1046... | 03f6c8e239723637811fd8d278661f5292351197 | 0cd4befb02df07c0b320cd6246227c13e57b2efb |
python/cpython | python__cpython-131682 | # `anext(A(), default)` crashes when `StopAsyncIteration` is raised by a synchronous `__anext__`
# Crash report
### What happened?
```py
Python 3.14.0a6+ (heads/main:0e53038ea82, Mar 24 2025, 14:56:34) [GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> class A:
... de... | 929afd1d6ee4fb89ac818037effe6577947103de | 5fef4ff9ed47e82bce0696672eb2e4bd8953bb1e |
python/cpython | python__cpython-131671 | # `anextawaitable_close()` should be a `METH_NOARGS` not `METH_VARARGS`
# Bug report
### Bug description:
See https://github.com/python/cpython/pull/131609#discussion_r2009832215.
We can backport it because a TypeError is already raised (it's not raised by `anext_awaitable.close`, but rather by `coroutine_wrapper`)... | 1393bd35485d9a8aa99ceb7389fece91bb3fdefa | c3b8d73208a25735b6355de73297a51e9c1306b3 |
python/cpython | python__cpython-131653 | # Remove duplicated bits in `Lib/test/clinic.test.c`
# Feature or enhancement
### Proposal:
We have some duplicated bits in `Lib/test/clinic.test.c`. This file should only consist of clinic directives and no actual code as it's never compiled (it will never compile as we never implement the functions). We have some ... | 9888f175de5a942c76aec7fb11fae7ede367997b | ecd03739f87889bb2f173e0a476d26b468c776c9 |
python/cpython | python__cpython-131650 | # SyntaxWarning in test_string_literals
# Bug report
### Bug description:
```
./python -m unittest test.test_string_literals -vvv
/home/graingert/projects/cpython/Lib/test/test_string_literals.py:180: SyntaxWarning: "\ " is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\ "? A... | 2d83891dfd51f595de68b0336b3bfc876f7b2507 | 5abff6960b4aecb0d5c81c7482cf3faa74e1983d |
python/cpython | python__cpython-131648 | # ImportWarning in test_importlib ... test_permission_error_cwd
# Bug report
### Bug description:
```
test_permission_error_cwd (test.test_importlib.import_.test_path.Source_FindModuleTests.test_permission_error_cwd) ... /home/graingert/projects/cpython/Lib/importlib/_bootstrap_external.py:1227: ImportWarning: sys.p... | 8ada7a9e1435302ec2cb73375122072d0e1cdd6f | ea0453ee979174d6fc14aae0fd85e4ede6742a86 |
python/cpython | python__cpython-131646 | # ResourceWarning(s) from test_asyncio.test_events.TestPyGetEventLoop.test_get_event_loop_new_process
# Bug report
### Bug description:
```
PYTHONTRACEMALLOC=25 ./python -m unittest test.test_asyncio.test_events -vvv
test_not_implemented (test.test_asyncio.test_events.AbstractEventLoopTests.test_not_implemented) ...... | 71ce4acb25eb640a4582904172d2bb9600983f4c | 01ea4c77e51d6a36000da7da7bfb48c58591b225 |
python/cpython | python__cpython-131625 | # posix_spawn and posix_spawnp tests failing on NetBSD with stack limit assertions
# Bug report
### Bug description:
Multiple tests in `test_posix` for `posix_spawn` and `posix_spawnp` functionality are failing on NetBSD with stack limit-related assertions in the spawned processes. All failing tests show child proce... | c7f6535e4a3b447fbd67bf98eea82fd243e780be | 00cf5eacc52d4790c23a24c835fb6b048cb27d8c |
python/cpython | python__cpython-131588 | # Use stackrefs in `_PyType_LookupRef` and related functions
# Feature or enhancement
The [`object_lookup_special`](https://github.com/python/cpython/blob/56d0f9af147b2280ea0af7af5e57df1a01271991/Tools/ftscalingbench/ftscalingbench.py#L61-L66) microbenchmark in [`Tools/ftscalingbench/ftscalingbench.py`](https://githu... | 67fbfb42bd5dfe861d0c58d9e6c48d8eef033d24 | 3d4ac1a2c2b610f35a9e164878d67185e4a3546f |
python/cpython | python__cpython-131567 | # `tracemalloc.start()` and `tracemalloc.stop()` race condition
This occurs in both the GIL-enabled build and the free threaded build. It only happens in release builds, because `test_tracemalloc.test_tracemalloc_track_race` is skipped in debug builds.
Tracemalloc modifies the global "raw" memory allocator. The modif... | 18249d938335312d618a3962ec7590bea709d58e | 996246994341c91308364f3ed018cf9b7fec9bc8 |
python/cpython | python__cpython-132015 | # `PyType_AddWatcher` and friends are not thread safe in free-threading
`PyType_AddWatcher` and `PyType_ClearWatcher` are not thread safe as it modifies the interp's type watchers non-atomically.
`PyType_AddWatcher`:
https://github.com/python/cpython/blob/d3f6063af18a008e316e4342492e877ee51463e2/Objects/typeobject.c... | 25275bda790e8a689092e83855d6d0574f26061b | e8085319eb20aca7c0f8507aece505461db4f578 |
python/cpython | python__cpython-131551 | # html.parser produces different output than documented
When parsing >>> using html.parser, the actual output differs from the expected behavior as documented.
Run the following code:
```python
from html.parser import HTMLParser
from html.entities import name2codepoint
class MyHTMLParser(HTMLParser):
... | ee76e36d76a0e6916c0afc41228b043ab5174685 | 77b14a6d58e527f915966446eb0866652a46feb5 |
python/cpython | python__cpython-131532 | # Android cibuildwheel support
# Feature or enhancement
### Proposal:
This issue will link together a number of PRs required to support running cibuildwheel for Android. Specifically, we need the following features:
* Produce a release package containing a pre-compiled Python for Android.
* Enable the testbed app t... | fe5c4c53e7bc6d780686013eaab17de2237b2176 | 45a3ab5a81769eadd94da3e26eb9bb2f3ae80fb1 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.