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-126686 | # `ctypes`: Make `COMError`, mentioned in the "Function prototypes" section of documentation, public.
# Documentation
I have been part of a project that handles COM with Python for several years now.
When I first joined the project, `_ctypes.COMError` was a "mysterious error" to me.
Over time, by implementin... | 5b4502560ba83274badac46ad7f263402f7ad269 | 9d2a879affe790b44880d4e786b801c80cf6f7a9 |
python/cpython | python__cpython-126627 | # Corrupt .pyc files stay on disk after failed writes
# Bug report
### Bug description:
If writing a `.pyc` file fails (in my case due to a file size limit imposed by `ulimit`), it can leave corrupt data sitting on disk. This causes a crash the _second_ time you run the program, when the interpreter tries to load t... | c695e37a3f95c225ee08d1e882d23fa200b5ec34 | f6b0361c17552197f44be16435e4a5cb4b1d60ca |
python/cpython | python__cpython-126760 | # urllib.request.pathname2url() raises on NTFS alternate data stream
# Bug report
### Bug description:
On Windows, `urllib.request.pathname2url()` raises `OSError` when given a path with a colon in any position other than the second character. This excludes paths with [NTFS alternate data streams](https://learn.... | fd133d4f21cd7f5cbf6bcf332290ce52e5501167 | e8bb05394164e7735f7a9de80a046953606a38eb |
python/cpython | python__cpython-126853 | # Remove the `_PyOptimizer` APIs
We should rip the `_PyOptimizer` API out, and just keep all of the code that does that actual optimizing.
The API itself is unstable, constantly changing, poorly-defined, and undocumented. There's a bunch of infrastructure required just to test the API (not the actual optimizations ... | b44ff6d0df9ec2d60be63e5a106ca079464ece52 | 27494dd9ad6032c29e273cd7f45c204c00d6512c |
python/cpython | python__cpython-126617 | # Failed assertion in `itertoolsmodule.c: itertools_count_impl` for `count(sys.maxsize)`
# Crash report
### What happened?
Calling `itertools.count(sys.maxsize)` aborts with the following message:
```
python -c "from sys import maxsize; from itertools import count; count(maxsize)"
python: ./Modules/itertoolsmodule.... | 6e3bb8a91380ba98d704f2dca8e98923c0abc8a8 | 37c57dfad12744608091653fd753a1f770e2479b |
python/cpython | python__cpython-126754 | # Failed assertion in typeobject.c::wrap_buffer for `b"".__buffer__(-2**31 - 1)`
# Crash report
### What happened?
Calling `bytes_object.__buffer__(large_negative_number)` in a debug build aborts with this message:
```python
>>> b"".__buffer__(-2**31 - 1)
python: Objects/typeobject.c:9321: wrap_buffer: Asse... | 84f07c3a4cbcfe488ccfb4030571be0bc4de7e45 | b3687ad454c4ac54c8599a10f3ace8a13ca48915 |
python/cpython | python__cpython-126586 | # Add EHWPOISON to errno module
# Feature or enhancement
### Proposal:
```python
# Add a code block here, if required
```
Currently, the attribute about EHWPOISON is missing in errno
```
EHWPOISON
Memory page has hardware error.
```
from https://man7.org/linux/man-pages/man3/errno.3.... | 84ff1313d04e8cbeec7b2cbe4503d86f1f5b449d | 35d37d6592d1be71ea76042165f6cbfa6c4c3a17 |
python/cpython | python__cpython-126580 | # Adapt sys.audit() to Argument Clinic
It requoired support of var-positional parameters, which are now supported.
<!-- gh-linked-prs -->
### Linked PRs
* gh-126580
<!-- /gh-linked-prs -->
| a93fc0969e4d57a2ecfe18cbba7de2d5ee757e2c | a3e8e7bbc3d39e9e6cfa5605df9524076176a041 |
python/cpython | python__cpython-126576 | # zipfile.Path.open is slow when opening for writing in a ZIP with many entries
# Bug report
### Bug description:
I'm using the `zipfile` module to create a ZIP file with thousands of members. Each file is created by creating a corresponding `zipfile.Path` object first and then calling `.open()` on it.
The im... | 160758a574d12bf0d965d8206136e7da4f4fd6c3 | 450db61a78989c5a1f1106be01e071798c783cf9 |
python/cpython | python__cpython-126555 | # ctypes: We do not correctly handle NULL dlsym() return values
# Bug report
### Bug description:
The man(3) page for `dlsym()` states:
```
In unusual cases (see NOTES) the value of the symbol could actually be
NULL. Therefore, a NULL return from dlsym() need not indicate an error.
The correct way to distinguish ... | 8717f792f7cc343599dc60daf80630cceb66145b | c0f045f7fd3bb7ccf9828f4bfad55347d097fd41 |
python/cpython | python__cpython-136704 | # `importlib.reload` is not thread-safe
# Bug report
### Bug description:
There are two problems with `importlib.reload` regarding thread safety, and both are race conditions.
I naturally assume the function _should_ be thread-safe, consistently with other components of `importlib`.
I never ran into someone re... | 69d8fe50ddc4dbe757c9929a532e2e882f0261ba | dcd27aace180737adaddc79c00c181816fc6e162 |
python/cpython | python__cpython-126551 | # Pre-allocate version numbers for common builtin classes.
We use the `tp_version` field of class objects for quite a few of our optimizations, so it gets set for almost classes.
If we pre-allocate the version for common classes, like `int`, `float`, `tuple`, etc, then we can use the version number to speedup dispatc... | fa4092259763ffad45a5bb9ef55f515dc6a69ad2 | fd5580cd151e07c690e9d7594513be5fa3102a2e |
python/cpython | python__cpython-126584 | # The docs for the typing stdlib module use the phrase "bound type var" to mean two distinct things
# Documentation
Follow-up of: https://discuss.python.org/t/a-typevar-with-a-bound-is-a-bounded-typevar-or-a-bound-typevar/69966
As discussed above, in some places the stdlib docs for the typing module use the phra... | 434b29767f2fdef9f35c8e93303cf6aca4a66a80 | f435de6765e0327995850d719534be38c9b5ec49 |
python/cpython | python__cpython-126530 | # Guides to the parser and grammar contain obsolete links to devguide
# Documentation
Mentioned it for parsed.md in this Issue #126509
Closed in this PR #126510
Found the same issue in compiler.md, and searched through InternalDocs for any other appearance of devguide links, found nothing except two in compil... | 19c248185343dfad046bbe4046b2b900e7405666 | e3510bd3dd9ea8f2a30cb1128470aee3a48d8880 |
python/cpython | python__cpython-126526 | # `make regen-unicodedata` produces different file on macos and windows
# Bug report
1. https://github.com/python/cpython/blob/2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3/Tools/unicode/makeunicodedata.py#L38
2. https://github.com/python/cpython/blob/2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3/Tools/unicode/makeunicodedata.... | f223efb2a2d6a3e86556be7295cbbd3ef839f489 | feb3e0b19cb03f06364a3f5e970f0861b8883d1c |
python/cpython | python__cpython-126517 | # SET_OPCODE_OR_RETURN undefined if configured with --disable-gil
# Bug report
### Bug description:
The latest commit seems to have broken `specialized.c` when the GIL is disabled.
```
gcc -c -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -D_Py_TIER2=1 -D_Py_JIT -std=c11 -Wextra -W... | 6e03ff2419a7faf514ad833dc513175c4f7e9bc7 | 8fa4dc4ba8646c59f945f2451c53e2919f066065 |
python/cpython | python__cpython-126510 | # Guide to the parser contains an obsolete link to Changing CPython's grammar
# Documentation
cpython/InternalDocs/parser.md line 20
```md
See the devguide's [Changing CPython's grammar](https://devguide.python.org/developer-workflow/grammar/#grammar)
```
The link refers to https://devguide.python.org/developer... | b9082958ef7dfb57d0fef745a5bf2521546a0dd6 | 6e03ff2419a7faf514ad833dc513175c4f7e9bc7 |
python/cpython | python__cpython-126503 | # test_ssl: ConnectionHandler shuts down ThreadedEchoServer
Recently, `test_ssl` has been failing intermittently but frequently on macOS buildbots, see for example [here](https://buildbot.python.org/#/builders/725/builds/8906) (but look at the *first* failure; the re-run is #126499).
If `read()` in a `ThreadedE... | c9cda1608edf7664c10f4f467e24591062c2fe62 | 78ad7e632248dc989378cabeb797b9f3d940d9f2 |
python/cpython | python__cpython-126501 | # test_ssl: `non_linux_skip_if_other_okay_error` assumes err.reason is a string
Recently, `test_ssl` has been failing intermittently but frequently on macOS buildbots, see for example [here](https://buildbot.python.org/#/builders/725/builds/8906).
Since #108315, there's some code to *skip* tests, which does `getatt... | 78ad7e632248dc989378cabeb797b9f3d940d9f2 | 1fe67df8e373a5177143e4a310c83438e79f9b77 |
python/cpython | python__cpython-126556 | # Cannot create venv due to missing `venvlaunchert_d.exe` for Python 3.13td venv on Windows
# Bug report
### Bug description:
When Python 3.13 is installed with both `Include_debug=1` and `Include_freethreaded=1` (i.e. `cp313td`), there should be a corresponding `venvlaunchert_d.exe` for it.
https://github.co... | fd5580cd151e07c690e9d7594513be5fa3102a2e | 75ffac296ef24758b7e5bd9316f32a8170ade37f |
python/cpython | python__cpython-126490 | # Python implementation of pickle calls persistent_id() for a persistent id
# Bug report
Pickle allows to define the `persistent_id()` method in the `Pickler` class. If it is defined, it is called for every pickled object, and its result will be pickled instead if it is not None. In the Python implementation `persist... | 8fa4dc4ba8646c59f945f2451c53e2919f066065 | e56fd449fbb9ac099f389806d4c494fa66fca248 |
python/cpython | python__cpython-132694 | # [FreeThreading] test_ssl fails with env_changed: warnings.filters was modified by test_ssl
On a Free Threaded build, test_ssl fails with:
```
$ ./python -m test test_ssl --fail-env-changed -m test_ssl_in_multiple_threads
(...)
Warning -- warnings.filters was modified by test_ssl
Warning -- Before: (2199023... | 40c8be0008ecadb5d0dc9a017434b1133a3a6e06 | bc00ce941e03347dade3faa8822f19836b5bbfe4 |
python/cpython | python__cpython-126484 | # No proper validation for month in Calendar Module
# Bug report
### Bug description:
In the calendar module, `IllegalMonthError` is not handled properly. For months greater than 12, an IndexError is raised instead.
`formatmonthname ` do not raise IndexError for negative integer because list support negative intege... | 3be7498d2450519d5d8f63a35ef298db3b3d935b | a2c180f4e768267b12beda7f02436eb4a481dbe2 |
python/cpython | python__cpython-126473 | # Unnecessary error-checking branch in `lexer.c`.
# Bug report
### Bug description:
In file lexer.c we have
```c
Py_ssize_t invalid = _PyUnicode_ScanIdentifier(s);
if (invalid < 0) {
Py_DECREF(s);
tok->done = E_ERROR;
return 0;
}
```
[link](https://github.com/python/cpython/blob/m... | c810ed7c8e0a7464d19700ba1c8668a406f1c042 | a327810169982e3782bdefc2247789a71aa79b43 |
python/cpython | python__cpython-126465 | # `aarch64-apple-darwin/clang` JIT CI is broken
This it seems that this started happening a bit after LLVM 19.1.3 was released. Failures look like this:
https://github.com/python/cpython/actions/runs/11686618553/job/32543252335#step:6:1233
For some reason, `assert.h` can't be found. So it appears that something ... | a204c63919ca7ce528d8e3ab4196a4aa1a2b6ac4 | 83ba8c2bba834c0b92de669cac16fcda17485e0e |
python/cpython | python__cpython-126485 | # Calling `_pickle.load` with a `MagicMock` results in `SystemError`/aborts
# Crash report
### What happened?
Calling `_pickle.load(MagicMock())` with a results in an abort in debug builds and a `SystemError` in non-debug.
In debug builds:
```python
python -c "from unittest.mock import MagicMock as MM; from _pickle... | a1c57bcfd2bcbc55ff858407e09c1d8d8cee44e6 | 9cba47d9f151734815a61e32391ea7fca877ea55 |
python/cpython | python__cpython-126512 | # HACL SIMD support incorrectly detected under WASI
# Bug report
### Bug description:
I'm getting a lot of:
```
/opt/wasi-sdk/bin/clang -c -I../../Modules/_hacl -I../../Modules/_hacl/include -D_BSD_SOURCE -D_DEFAULT_SOURCE -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -Wno-unused-value... | 2a6b6b33dfe0f3c435abf2829b62ef3f1ef12cd3 | 5dc36dc5658f6ba9cfd9d7a2771baaf17d2ee23a |
python/cpython | python__cpython-126472 | # `_pyrepl._minimal_curses.tigetstr` segfaults
# Crash report
### What happened?
Calling `tigetstr` from the `_pyrepl._minimal_curses` module segfaults, on free-threading or normal builds:
```
python -c "from _pyrepl._minimal_curses import tigetstr; tigetstr('')"
Segmentation fault
```
It happens in the return line... | b2bbdc56e3276f3b37ea5cf5f73f49c4cce6d9f6 | d00878b06a05ea04790813dba70b09cc1d11bf45 |
python/cpython | python__cpython-126481 | # Calling many methods on `_ssl._SSLSocket()` segfaults
# Crash report
### What happened?
Calling many different methods on a `_ssl._SSLSocket()` instance causes a segfault, for example:
```python
import _ssl
s = _ssl._SSLSocket()
s.shutdown()
# Segmentation fault
```
Other methods known to segfault are `do_handsha... | b1c4ffc20573befb4db66bbbdd569b9bd13bb127 | 09d7083962062acfef7e7a9a309a01fb70ad8276 |
python/cpython | python__cpython-126452 | # register contextvars.Context to collections.abc.Mapping
# Feature or enhancement
### Proposal:
`contextvars.Context` is documented as implementing the collections.abc.Mapping interface. I believe we should register it to the abc, so an `isinstance` check can work.
This is similar to https://github.com/python/cpyt... | 5dc36dc5658f6ba9cfd9d7a2771baaf17d2ee23a | b9082958ef7dfb57d0fef745a5bf2521546a0dd6 |
python/cpython | python__cpython-126444 | # Compile warnings in "i686-pc-windows-msvc/msvc (Debug)"
# Bug report
Link: https://github.com/sobolevn/cpython/actions/runs/11679282454/job/32520346523#step:4:793
```
D:\a\cpython\cpython\Modules\blake2module.c(477,23): warning C4018: '>': signed/unsigned mismatch [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
... | 0b67ce930a56c4ffd597b1a658ddcbacfb40e798 | bbfd9c92fa3e3d77a86c7858617eb3d09de44fd1 |
python/cpython | python__cpython-126426 | # Several problems with `_lsprof_Profiler_enable`
# Bug report
There are several problems that I see with `_lsprof.Profiler.enable()` method:
- https://github.com/python/cpython/blob/d3840503b0f590ee574fbdf3c96626ff8b3c45f6/Modules/_lsprof.c#L783-L787 This code implictly overrides the set exception, I would prefer t... | 75872605aa78dbdfc5c4f025b0f90a7f37ba10c3 | 78842e4a98994a218a93992a2a1e3ca3eaa28e79 |
python/cpython | python__cpython-126419 | # Register multiprocessing proxy types to an appropriate collections.abc class
# Feature or enhancement
### Proposal:
For consistency with the types that they proxy, I believe that `multiprocessing.managers.ListProxy` should be registered to `collections.abc.MutableSequence` and `multiprocessing.managers.DictProxy` ... | 78842e4a98994a218a93992a2a1e3ca3eaa28e79 | 1371295e678f00a7c89dc5bb2ab61ede9adbc094 |
python/cpython | python__cpython-126416 | # New warning: `'initializing': conversion from '__int64' to 'int', possible loss of data`
# Bug report
### Bug description:
Popped up in https://github.com/python/cpython/pull/126414/files
### CPython versions tested on:
CPython main branch
### Operating systems tested on:
_No response_
<!-- gh-linked-prs -->
... | 78015818c2601db842d101cad6ce2319c921935f | 532fc08102d62c04d55f5b8aac00bd9e7e12ff4b |
python/cpython | python__cpython-126698 | # Add translation tests for getopt and optparse
# Feature or enhancement
### Proposal:
Follow up from https://github.com/python/cpython/issues/124295
Now that we have translation tests for argparse, we should add translation tests for getopt and optparse as well.
Small note on the implementation: given that the tes... | dff074d1446bab23578a6b228b0c59a17006299c | b697d8c48e5e47c37fdd5dd74de40dfb4d6c0d01 |
python/cpython | python__cpython-126733 | # UAF in `asyncio.Future` when removing a callback while `fut->fut_callbacks` length is 1
# Crash report
### What happened?
This bug boils down to a missing incref on the callback before calling `PyObject_RichCompareBool`. Although we can't directly control the callbacks list with `fut._callbacks` ever since it was ... | 37c57dfad12744608091653fd753a1f770e2479b | 0ef84b0e2bf511b2cb5268a9ce64d7f2209fb3c4 |
python/cpython | python__cpython-126716 | # Support socket timeout in SysLogHandler to prevent indefinite blocking on socket creation
# Feature or enhancement
### Proposal:
Hi,
In the current implementation of the SysLogHandler class from the logging.handlers module, if the specified address does not respond or is unreachable, the createSocket method may bl... | fdcedfd3cf1a645634dee354ee349d966c56348f | 002c4e2982910937f35a4b80ab94b07c3c16067f |
python/cpython | python__cpython-126393 | # Preserving order of options and nonoption arguments in gnu_getopt()
# Feature or enhancement
by default GNU `getopt()` permutes the contents of argv as it scans, so that eventually all the nonoptions are at the end. It supports two other scanning modes -- one compatible with Posix `getopt()` (stop at first nonoptio... | 35010b8cf2e6f5f2791fb336951c518e4f087a43 | 12ca7e622ff21ba3b7c90c62be6f6f82d543f25b |
python/cpython | python__cpython-126610 | # Add tests to verify the behavior of basic COM methods.
# Feature or enhancement
### Proposal:
I am one of the maintainers of [`comtypes`](https://github.com/enthought/comtypes/). `comtypes` is based on `ctypes` to implement [`IUnknown`](https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nn-unknwn-iunkn... | 7725c0371a93be3ccfaff4871014a80bdf0ea274 | 0cb20177d667f0058f3d8d808abaf340e8345f04 |
python/cpython | python__cpython-126375 | # Support options with optional arguments
# Feature or enhancement
GNU `getopt` supports options with optional arguments. For example GNU `grep` can be used with option `--color=auto` and with just `--color`. Unix `getopt` does not need it, because it stops after encountering first nonoption argument, but GNU `getopt... | 25aee21aa84061b5d8e08247c8581da1459f37e8 | 79805d228440814c0674ab5190ef17f235503d2e |
python/cpython | python__cpython-126369 | # Abort in free-threaded build due to mutation of `ChainMap` of a `Counter` in threads
### What happened?
The code below, in a no-gil debug build with `PYTHON_GIL=0`, results in the following abort:
```
python: ./Include/internal/pycore_stackref.h:99: _PyStackRef_FromPyObjectSteal: Assertion `obj != NULL' failed.... | 1371295e678f00a7c89dc5bb2ab61ede9adbc094 | 407c0366d9ccd2a36c6cc8bf92324856b16fd604 |
python/cpython | python__cpython-126364 | # Speed up pattern parsing in `pathlib.Path.glob()`
`pathlib.Path.glob()` converts a given string pattern to a `Path` object:
https://github.com/python/cpython/blob/dcae5cd6abaae4f73e656ebc054f30d3f15ca7b8/Lib/pathlib/_local.py#L644-L645
Which has the following drawbacks:
- It instantiates a `Path` object, wh... | 9b7294c3a560f43f1e26a0f48c258829076d6464 | 2e95c5ba3bf7e5004c7e2304afda4a8f8e2443a7 |
python/cpython | python__cpython-126358 | # Remove obsolete import guards around `gettext` in `getopt` and `optparse`
# Feature or enhancement
### Proposal:
In `getopt` and `optparse`, there are import guards around `gettext`:
https://github.com/python/cpython/blob/556dc9b8a78bad296513221f3f414a3f8fd0ae70/Lib/getopt.py#L37-L41
https://github.com/python/cp... | ac556a2ad1213b8bb81372fe6fb762f5fcb076de | 19d935843727fff93b2c0e09a63fd32c0d97098d |
python/cpython | python__cpython-126354 | # Remove implicit creation of event loop from `asyncio.get_event_loop`
Remove implicit creation of event loop from `asyncio.get_event_loop` as deprecated from Python 3.12.
<!-- gh-linked-prs -->
### Linked PRs
* gh-126354
<!-- /gh-linked-prs -->
| fe5a6ab7bea927e887b7b3c2d4e8fe8eac7106c3 | 0d80777981f95bbc79b146fc78b2189c82521ab9 |
python/cpython | python__cpython-126350 | # Turtle context managers for `fill`, `poly` and `tracer`
# Feature or enhancement
### Proposal:
When I taught Python with Turtle, I always had to find other examples when I got to context managers. This is a shame, as there are several places in the Turtle module where context managers make sense. The most obvious ... | d3adf02c90a570c5ee5d9b8cefe9b10305cff9e6 | 4dade055f4e18a7e91bc70293abb4db745ad16ca |
python/cpython | python__cpython-126759 | # `SystemError` from calling `__iter__` on a released `memoryview`
# Crash report
### What happened?
The code below causes a `SystemError` on all tested Python versions in Windows and Linux. In a no-gil debug build of main, besides the expected abort, sometimes a segfault occurs.
```python
from threading import Thr... | a12690ef49e8fc8a3af4c5f1757eb3caffb35e03 | ba088c8f9cf7163b0f28c507cb1343befe21997e |
python/cpython | python__cpython-126650 | # 3.13.0 REPL crashes on double ctrl+z in line overflow
# Bug report
### Bug description:
The new REPL in 3.13.0 crashes on pressing ctrl+Z twice at the end of a overflowing line, refer to the attachment
https://github.com/user-attachments/assets/13301701-9821-483a-bd3d-dbe2522c98f9
### CPython versions tested on:... | d147e5e52cdb90496ae5fe85b3263cdfa9407a28 | f18b2264929c56360c868d7ad77508035d751352 |
python/cpython | python__cpython-126323 | # Simplify stdlib code by using `itertools.batched()`
#98364 introduced `itertools.batched()` but since it's pretty new it's still rarely used inside the standard library.
[`pickle.py` includes a custom version](https://github.com/python/cpython/blob/f0c6fccd08904787a39269367f09f263d496114c/Lib/pickle.py#L1038-L104... | bd4be5e67de5f31e9336ba0fdcd545e88d70b954 | 10eeec2d4ffb6b09a6d925877b6d9ef6aa6bb59d |
python/cpython | python__cpython-126351 | # `curses.napms()` aborts with a `SystemError`
# Crash report
### What happened?
The abort happens on normal and no-gil debug builds, release builds also hit the `SystemError`.
```python
import curses
curses.napms(37)
```
Error is:
```
Fatal Python error: _Py_CheckFunctionResult: a function returned a result with ... | 19d935843727fff93b2c0e09a63fd32c0d97098d | dcae5cd6abaae4f73e656ebc054f30d3f15ca7b8 |
python/cpython | python__cpython-126338 | # GC aborts in debug no-gil build
# Crash report
### What happened?
In debug no-gil builds with `PYTHON_GIL=0`, it's possible to trigger the three assertions here with simple code:
https://github.com/python/cpython/blob/c84a136511c673f495f466887716b55c13b7e3ac/Python/gc_free_threading.c#L550-L558
For this code:
```... | d4c72fed8cba8e15ab7bb6c30a92bc9f2c8f0a2c | 8717f792f7cc343599dc60daf80630cceb66145b |
python/cpython | python__cpython-126336 | # An os.sched_param object can be dumped with pickle, but loading raises TypeError
# Bug report
### Bug description:
While working on an experiment with different scheduler priorities and the **multiprocessing.Pool**, I found out that using an **os.sched_param** object as one of the **initargs** parameters raised th... | d3840503b0f590ee574fbdf3c96626ff8b3c45f6 | d9602265479bcd96dc377d92a34556baf34ac3cd |
python/cpython | python__cpython-126398 | # Constant slices are deduplicated too aggressively
# Bug report
### Bug description:
I try to build numpy with Python 3.14.0a1 and encounter very strange test failures regarding array slicing. The offending tests source code can be found [here](https://github.com/numpy/numpy/blob/v2.1.2/numpy/_core/tests/test_i... | a38e82bd8c249c126ab033c078170b6dea27a619 | 9357fdcaf0b08dac9396c17e8695b420fad887f8 |
python/cpython | python__cpython-126260 | # Doctest warning in `sqlite3.rst`: "unclosed database in sqlite3.Connection"
# Bug report
Link: https://github.com/python/cpython/actions/runs/11619995124/job/32360863917?pr=126257#step:8:481
```
Document: library/sqlite3
-------------------------
3 items passed all tests:
77 tests in default
3 tests in sqlit... | 295262c8ecb085b4fea552bc6229af3551bbaf7a | 260843df1bd8a28596b9a377d8266e2547f7eedc |
python/cpython | python__cpython-126257 | # `time.rst` uses `the same than`, which is grammatically incorrect
# Documentation
The [`time` documentation](https://docs.python.org/3.13/library/time.html#time.monotonic) uses `the same clock than time.monotonic` instead of `the same clock as time.monotonic`, which is [grammatically false](https://dictionary.cam... | d0abd0b826cfa574d1515c6f8459c9901939388f | dd3c0fa3fd2795326dae0e0ed63c668f5506cf32 |
python/cpython | python__cpython-126302 | # `test_embed.InitConfigTests.test_initconfig_api` fails when cpython is built with `--enable-experimental-jit=interpreter`
# Bug report
### Bug description:
The `test_embed.InitConfigTests.test_initconfig_api` is failing on main when cpython is built with `--enable-experimental-jit=interpreter` at commit `0e8665554... | f0c6fccd08904787a39269367f09f263d496114c | 8477951a1c460ff9b7dc7c54e7bf9b66b1722459 |
python/cpython | python__cpython-126241 | # Possible null pointer dereference of variable args in _PyPegen_collect_call_seqs
# Crash report
### What happened?
*args* [can be NULL as a result of](https://github.com/python/cpython/blob/d467d9246cbe0ce5dc149c4c74223bb8374ece73/Parser/action_helpers.c#L1130) `_Py_asdl_expr_seq_new`, and then [dereference happe... | 94639f6b7182c2e1a82f2f907b03b5b15202acfa | 01415213d72504eafc159721a8f55d57b374fd9c |
python/cpython | python__cpython-126239 | # Possible null pointer dereference of freevars in _PyCompile_LookupArg
# Bug report
### Bug description:
*freevars* is [checked for null](https://github.com/python/cpython/blob/d467d9246cbe0ce5dc149c4c74223bb8374ece73/Python/compile.c#L893C1-L895C10), but later [possible dereference happens](https://github.com/pyth... | 8525c9375f25e6ec0c0b5dfcab464703f6e78082 | 0b67ce930a56c4ffd597b1a658ddcbacfb40e798 |
python/cpython | python__cpython-126224 | # `SystemError` caused by `_interpreters.create()` with invalid unicode argument
# Bug report
### Bug description:
It's possible to make a debug build of Python abort by passing an invalid Unicode argument to `_interpreters.create()`, resulting in `SystemError: <built-in function create> returned a result with an ex... | 01415213d72504eafc159721a8f55d57b374fd9c | 8c22eba877225ab29cd64672dcb97f09a5f7336f |
python/cpython | python__cpython-126507 | # JIT error stubs don't account for peeks
# Crash report
When deciding how many stack items to pop in an `_ERROR_POP_N` stub, we use `_PyUop_num_popped`. However, for opcodes with "peeked" items that never get popped, this is incorrect.
For example, consider `SET_ADD(2)`. It has three inputs and two outputs. How... | 85036c8d612007356d2118eb25b460505078b023 | c9cda1608edf7664c10f4f467e24591062c2fe62 |
python/cpython | python__cpython-126233 | # `_lsprof.Profiler._creturn_callback()` segfaults
# Crash report
### What happened?
It's possible to crash Python by simply calling the `._creturn_callback()` or the `._ccall_callback()` methods of the `Profiler` class in either `_lsprof` or `cProfile`.
```python
from _lsprof import Profiler
Profiler()._creturn_ca... | c806cd5af677c385470001efc68da38a32919196 | 3032fcd90ecb745b737cbc93f694f9a802062a3a |
python/cpython | python__cpython-126214 | # urllib.request.pathname2url() and url2pathname() remove slashes on Windows
# Bug report
### Bug description:
`urllib.request.pathname2url()` unexpectedly removes doubled and trailing slashes, but only on Windows, and only for DOS device paths (not UNC paths):
```python
>>> from urllib.request import pathna... | 54c63a32d06cb5f07a66245c375eac7d7efb964a | fa4092259763ffad45a5bb9ef55f515dc6a69ad2 |
python/cpython | python__cpython-126213 | # cases_generator inserts code to save the stack pointer in the incorrect location when statements containing escaping calls are next to preprocessor directives
# Bug report
### Bug description:
The cases generator will insert code to save the stack pointer at the incorrect location if the statement containing an es... | 821759d63101334fa8a1863135429c341ca0b234 | 32e07fd377f81cbeb8c108fc791a3e7d631319b6 |
python/cpython | python__cpython-126329 | # warnings.warn's skip_file_prefixes doesn't work when provided `__file__`.
# Bug report
### Bug description:
I was attempting to make warning.warn skip all frames in the calling file by setting `skip_file_prefixes=(__file__,)`. Frustratingly it wasn't working as expected and was blaming an intermediate frame in the... | 0ef84b0e2bf511b2cb5268a9ce64d7f2209fb3c4 | f223efb2a2d6a3e86556be7295cbbd3ef839f489 |
python/cpython | python__cpython-126244 | # `make regen-all` doesn't pass `-f` to argument clinic
# Bug report
### Bug description:
Output:
```none
python3.13 ./Tools/clinic/clinic.py --make --exclude Lib/test/clinic.test.c --srcdir .
Error in file 'Modules/posixmodule.c' on line 13087:
Checksum mismatch! Expected '9756767bdbdabe94', computed '1da... | 43447cb63421fb4db5411c1e74bdd8a4cfcf9263 | 295262c8ecb085b4fea552bc6229af3551bbaf7a |
python/cpython | python__cpython-126208 | # urllib.request.pathname2url() mishandles UNC paths
# Bug report
### Bug description:
When given a Windows UNC path, `urllib.request.pathname2url()` incorrectly generates a URI that begins with four slashes. The correct number is two, see [ref1](https://learn.microsoft.com/en-us/archive/blogs/ie/file-uris-in-window... | 951cb2c369e8b8fb9f93662658391a53fd727787 | 2b2d607095335024e5e2bb358e3ef37650536839 |
python/cpython | python__cpython-126805 | # Upgrade bundled pip to 24.3
# Feature or enhancement
### Proposal:
`ensurepip`'s bundled version of pip gets updated to the current latest 24.3.
### Background:
The pip 24.2 wheel bundled into current python releases is broken and does not work at all on old macOS releases (like e.g. macOS Sierra / High ... | f6b0361c17552197f44be16435e4a5cb4b1d60ca | 142104ce78a8717f99eb42ce030eb29775dd550c |
python/cpython | python__cpython-126190 | # Provide a script to create a complete emscripten build
This is based on https://github.com/python/cpython/issues/103065 but for Emscripten. Create a script `Tools/wasm/emscripten.py` that automates building for Emscripten.
<!-- gh-linked-prs -->
### Linked PRs
* gh-126190
<!-- /gh-linked-prs -->
| f8276bf5f37ef12aa0033634151fa33a6f7bd4f2 | 54c63a32d06cb5f07a66245c375eac7d7efb964a |
python/cpython | python__cpython-126179 | # NFC Separate Emscripten and WASI standard lib disables in configure
In `configure.ac` in the "Modules that are not available on some platforms" we `PY_STDLIB_MOD_SET_NA` a bunch of standard library modules that either won't compile or won't work in Emscripten and WASI. Currently these two targets are overlapped, so ... | b3122aa6132de263f389317efe9dcf2b14c6b393 | ac3a2c8abceeec44848635c26f09ff382bbcab73 |
python/cpython | python__cpython-126428 | # Add attributes to tomllib.TOMLDecodeError
# Feature or enhancement
### Proposal:
Add the same attributes to `tomllib.TOMLDecodeError` that `json.JSONDecodeError` also has, namely: `msg`, `doc`, `pos`, `lineno`, `colno`. This will help user facing apps show customized errors to users.
[This draft PR](https://githu... | 29b5323c4567dc7772e1d30a7ba1cbad52fe10a9 | a12690ef49e8fc8a3af4c5f1757eb3caffb35e03 |
python/cpython | python__cpython-127203 | # PYTHON_BASIC_REPL env var not fully documented
# Documentation
In Python 3.13, a new REPL was introduced. There now also exists a way to switch back and forth between the two using PYTHON_BASIC_REPL. In the [documentation](https://docs.python.org/3/using/cmdline.html#envvar-PYTHON_BASIC_REPL) entry for PYTHON_BAS... | f18b2264929c56360c868d7ad77508035d751352 | 610584639003317193cdcfe38bbdc8268b612828 |
python/cpython | python__cpython-126566 | # Core dump with specific call of find_frozen
# Crash report
### What happened?
```bash
>>> from importlib import _imp
>>> _imp.find_frozen("zipimport", withdata=True)
python3: Objects/memoryobject.c:733: PyMemoryView_FromMemory: Assertion `mem != ((void *)0)' failed.
Aborted (core dumped)
```
python is ... | 9ecd8f7f40e6724a1c1d46c2665147aaabceb2d2 | 06a8b0bb5ee0d01ed93315137c41c104a11e4640 |
python/cpython | python__cpython-126169 | # Genericize iOS testbed app
# Feature or enhancement
### Proposal:
In order to run the CPython test suite, CPython source includes an Xcode project that is able to start a Python interpreter and run the equivalent of `python -m test`. The *Python* test suite is wrapped in an Xcode XCTest suite that contains a singl... | 500a4712bb42355eeb785ed5b9d71507384d18bc | 0c5c80928c476ac0dcb9a053b15a562af899cfba |
python/cpython | python__cpython-126215 | # The return value of function `math.isclose` can be somewhat misleading
# Documentation
The following example may be misleading to people who are not familiar with the function:
```python
>>> math.isclose(math.sin(0), 0)
... True
>>> math.isclose(math.sin(math.pi), 0)
... False
>>>
```
To a newbie, th... | 081706f873b7d1a10b27016a9ed350b20c719709 | 9441993f272f42e4a97d90616ec629a11c06aa3a |
python/cpython | python__cpython-126157 | # `Morsel.__init__` loops reserved values and could be replaced with a simple dict update
https://github.com/python/cpython/blob/224c370a3680132997f1e43d20a3b4ca95a060ab/Lib/http/cookies.py#L276
Backstory:
https://github.com/aio-libs/aiohttp/pull/9594
Processing cookies is a significant part of the `aiohttp` req... | dd3c0fa3fd2795326dae0e0ed63c668f5506cf32 | 0e8665554b2f1334e530fd6de5b3a4e908405419 |
python/cpython | python__cpython-126147 | # Remove `__cmp__` method from some test cases
# Feature or enhancement
### Proposal:
A `__cmp__` method was removed in 3.0, but it is still present in some test cases:
* https://github.com/python/cpython/blob/main/Lib/test/test_descr.py#L3242
* https://github.com/python/cpython/blob/main/Lib/test/test_richcmp.py#... | 4877e33708b3723d4b4069ca5c5f090d0b8dcec6 | b1f13bce62ff666f59286e8325011d8e9e0ddca7 |
python/cpython | python__cpython-126140 | # Improve error message locations for future statements with unknown future features
# Feature or enhancement
### Proposal:
Currently, attempting to use a future statement with an unknown future feature produces a syntax error with the error location set to the start of the line:
```none
$ python3 example.py
File ... | 224c370a3680132997f1e43d20a3b4ca95a060ab | 9dfef4e5f4ac3c1ce494c48f2476a694c12d72a5 |
python/cpython | python__cpython-126305 | # UAF when using a malicious `__getattribute__` when calling a class's `cancel` function in `task_step_handle_result_impl` in `_asynciomodule.c`
# Crash report
### What happened?
This is the bug I mentioned I was looking into in https://github.com/python/cpython/issues/126080#issuecomment-2441969209, but it's the sa... | f032f6ba8fec6fab35edeec0eb40cd73e9d58928 | 914356f4d485e378eb692e57d822b893acc0c0da |
python/cpython | python__cpython-128666 | # Improve `asyncio.loop.add_read` and `asyncio.loop.add_writer` documentation
# Documentation
The documentation for add_read/add_writer (https://docs.python.org/3/library/asyncio-eventloop.html#watching-file-descriptors ) does not specify what happens if you add two different callbacks for the same fd. Do both cal... | b2adf556747d080f04b53ba4063b627c2dbe41d1 | 1439b81928f1b52c5a0ac7fd81fdd66afd5f72da |
python/cpython | python__cpython-126236 | # Use static copyright years
# Short version
Each January we update the PSF copyright years in the repo:
```
Copyright © 2001-2024 Python Software Foundation. All rights reserved.
```
2025 is [approaching](https://hugovk.github.io/year-progress-bar/).
Can we get permission from the PSF to adopt a copyrig... | 91f4908798074db6c41925b4417bee1f933aca93 | 8ff7efb46d34ee454239bd86ff5136f386b9749b |
python/cpython | python__cpython-135681 | # test_os.TimerfdTests is flaky
# Bug report
### Bug description:
When compiling `dev-lang/python-3.13.0` on Gentoo, the following tests failed:
```
======================================================================
FAIL: test_timerfd_interval (test.test_os.TimerfdTests.test_timerfd_interval)
---------... | 5c25c884b93eb79f640c47d6dba20f11fdf0ade4 | 7a20c72cb612653fa46c41c3a969aefa2b52738b |
python/cpython | python__cpython-126118 | # Potential null pointer dereference in `PySys_AddWarnOptionUnicode`
# Bug report
### Bug description:
Pointer *tstate* is compared to a NULL value [here](../blob/3.11/Python/sysmodule.c#L2300), but above there is a [dereference](../blob/3.11/Python/sysmodule.c#L2298). Stack trace: *_PySys_AddWarnOptionWithError* ->... | fad36bf38248130bc48b81a5e7c31a7649a6456e | 7eaef74561c27865496505913d19eec7bb3fbcf5 |
python/cpython | python__cpython-126982 | # COPYRIGHT file not found
# Bug report
### Bug description:
The file, https://github.com/python/cpython/blob/v3.11.4/Modules/config.c.in refers to a file, 'Misc/COPYRIGHT' for information on license of the contents of the file. However, the file COPYRIGHT is not in the source code.
We could find the file at https... | 5d9b62005a110164c6be5bf412d344917e872e10 | b543b32eff78ce214e68e8c5fc15a8c843fa8dec |
python/cpython | python__cpython-126111 | # Potential null pointer dereference in `PySSLSession_richcompare`
# Bug report
### Bug description:
Pointer *left* is dereferenced [here](../blob//3.11/Modules/_ssl.c#L5027), but null-pointer check [is done later](../blob//3.11/Modules/_ssl.c#L5029). Correct code should look like this:
```c
int result;
if ... | a64a1c920660b0c1e4dd5a9573004cd527e15184 | 9b14083497f50213f908c1359eeaf47c97161347 |
python/cpython | python__cpython-126115 | # Segmentation fault after deleting __fields__ attribute from ast.AST
# Crash report
### What happened?
```bash
>>> import ast
>>> dir(ast.AST)
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '... | b2eaa75b176e07730215d76d8dce4d63fb493391 | 0bbbe15f5688552236c48f2b6e320c5312720b8e |
python/cpython | python__cpython-127981 | # Unpacking TypeAliasType to tuple of types using * errors at runtime, Unpack doesn't
# Bug report
### Bug description:
Discussed in microsoft/pyright#9343 @JelleZijlstra [asked](https://github.com/microsoft/pyright/discussions/9343#discussioncomment-11077428) me to open this issue.
I'm writing classes using ... | e091520fdbcfe406e5fdcf66b7864b2b34a6726b | d8a1cf469e40b538a84e583ac1d5d34418ed9a6a |
python/cpython | python__cpython-126088 | # pythonw.exe from venv in 3.13 always creates console window
# Bug report
### Bug description:
In 3.13.0a4 yet another form of launcher executable was added, apparently called "venvlauncher". This latest creation is apparently unaware that pythonw (the GUI subsystem, no-console-window form of interpreter) exists an... | 802d405ff1233a48004a7c9b302baa76291514d1 | 9effa0ff06047f3d957bf37267742a98106581ff |
python/cpython | python__cpython-126103 | # Bug: Reference leak in `_asyncio_Task___init___impl` in `_asynciomodule.c`
# Bug report
### Bug description:
I discovered this while working on https://github.com/python/cpython/issues/126080. If the func is given a context that isn't `None`, instead of doing `Py_XSETREF` it'll just do a regular assignment meaning... | d07dcce6935364cab807e0df931ed09b088ade69 | d467d9246cbe0ce5dc149c4c74223bb8374ece73 |
python/cpython | python__cpython-126120 | # Crash: UAF in `task_call_step_soon` in `_asynciomodule.c` (with admittedly ridiculous setup)
# Crash report
### What happened?
This is basically an extension to https://github.com/python/cpython/issues/125984 but it took me a bit to get a working PoC because I have never used asyncio.Task ever.
The crash is cause... | 0e8665554b2f1334e530fd6de5b3a4e908405419 | 3275cb19530fb5c7115cf8313f1ada9621ed3a92 |
python/cpython | python__cpython-126077 | # Account for relocated objects in tracemalloc
There are many places where we resize/reallocate memory for objects inline and we are not properly telling tracemalloc of their destruction, resulting in invalid object counting
<!-- gh-linked-prs -->
### Linked PRs
* gh-126077
* gh-127823
<!-- /gh-linked-prs -->
| 30aeb00d367d0cc9e5a7603371636cddea09f1c0 | 899fdb213db6c5881c5f9c6760ead6fd713d2070 |
python/cpython | python__cpython-126143 | # Embeddable distribution for 3.13 includes Tcl/Tk DLL files
# Bug report
### Bug description:
I noticed that the size of the embeddable distribution for Windows increased by roughly 2 MB between 3.12 and 3.13 (in the 32-bit distribution when unpacked), despite the PEP 594 dead batteries removal. This turns out to b... | f51fd84034e2cbf458321c25ba6fd085a39d6f6f | ff8349979c2ca4e442afc583e1217519611c6c48 |
python/cpython | python__cpython-126101 | # The method for storing docstrings in code objects is awkward and prevents optimizations.
Currently, the zeroth constant in a code object's `co_consts` tuple is the docstring, iff it is a string.
This means that any code object without a docstring must not have a string as its first constant. To guarantee this we ... | 35df4eb959b3923c08aaaeff728c5ed1706f31cf | 2ab377a47c8290f8bf52c8ffb5d7fc4c45452611 |
python/cpython | python__cpython-126073 | # Improve formatting of the argparse documentation
The proposed PR improves formatting of the `argparse` documentation.
* Use appropriate roles for ArgumentParser, Action, etc.
* Remove superfluous repeated links.
* Explicitly document signatures and add index entries for some methods and classes.
* Make it more... | 2ab377a47c8290f8bf52c8ffb5d7fc4c45452611 | 00e5ec0d35193c1665e5c0cfe5ef82eed270d0f4 |
python/cpython | python__cpython-126069 | # Fix exceptions in argparse
# Bug report
There are several issues with exceptions in the `argparse` module:
* Only error messages for ArgumentError and ArgumentTypeError should be translated. These exceptions are the part of the user interface of the program that uses `argparse`. Other exceptions indicate logical ... | cc9a1839930d30450b12c460eee58137e3a3d6f1 | 1f16df4bfe5cfbe4ac40cc9c6d15f44bcfd99a64 |
python/cpython | python__cpython-126065 | # Add PyLong_IsPositive/Zero/Negative() functions
as alternative API to PyLong_GetSign().
It seems, C-API WG is positive on this, see https://github.com/capi-workgroup/decisions/issues/29. This issue will track implementation.
<!-- gh-linked-prs -->
### Linked PRs
* gh-126065
* gh-126788
<!-- /gh-linked-prs -->
| 8ff7efb46d34ee454239bd86ff5136f386b9749b | abb90ba46c597a1b192027e914ad312dd62d2462 |
python/cpython | python__cpython-126067 | # os.walk() example of an implementation of shutil.rmtree() is incomplete
# Documentation
In this section:
https://docs.python.org/3.9/library/os.html?highlight=os%20walk
there is a code example at the bottom that claims to be "a simple implementation of `shutil.rmtree()`". However it is incomplete. Reason:... | 597d814334742dde386a4d2979b9418aee6fcaba | 4f826214b30ad50365f45bf07e4a02f34f897ab5 |
python/cpython | python__cpython-127964 | # UAF: `xml.etree.ElementTree.Element.find*` when concurrent mutations happen
# Crash report
### What happened?
Similar to https://github.com/python/cpython/issues/126033, the following crashes:
```py
import xml.etree.ElementTree as ET
class EvilTag(str):
def __eq__(self, other):
base.clear()
r... | c57623c221d46daeaedfbf2b32d041fde0c882de | 6aa88a2cb36240fe2b587f2e82043873270a27cf |
python/cpython | python__cpython-126036 | # Missing whitespaces when using `Py_CheckRecursiveCall` & co
# Bug report
### Bug description:
The message must be prefixed by a whitespace since `_Py_CheckRecursiveCall` directly appends them to "maximum recursion depth exceeded":
https://github.com/python/cpython/blob/dc76a4ad3c46af3fb70361be10b8a791cd126931/Pyt... | 19e93e2e269889ecb3c4c039091abff489f247c2 | 6870eb3f7322ed64a1ca8bbda5cf4e121e181b54 |
python/cpython | python__cpython-126025 | # Improve UTF-8 decode speed
# Feature or enhancement
### Proposal:
DuckDB and orjson don't use PyUnicode_FromStringAndSize() but PyUnicode_4BYTE_DATA() because they think Python UTF-8 decoder is slow.
## vs DuckDB
* DuckDB decoder: https://github.com/duckdb/duckdb/blob/e791508e9bc2eb84bc87eb794074f4893093... | 322b486010095f89271fba51b4b23c35d87c0595 | bfabf96b50b7d6a9c15b298a86ba3633b05a1fd7 |
python/cpython | python__cpython-126020 | # `sys.audit(0)` aborts due to an assertion in debug build
# Crash report
### What happened?
There is an assert in `sysmodule.c` that makes the interpreter abort when calling `sys.audit` with a non-string value in debug builds:
https://github.com/python/cpython/blob/f6cc7c8bd01d8468af70a65e550abef3854d0754/Python/sy... | 80eec52fc813bc7d20478da3114ec6ffd73e7c31 | dc76a4ad3c46af3fb70361be10b8a791cd126931 |
python/cpython | python__cpython-126066 | # Ignore directories containing only `__pycache__` in `test_makefile_test_folders`
# Feature or enhancement
### Proposal:
While working on some tests, sometimes when switching branches I have a leftover `__pycache__` directory in an otherwise empty test folder. This can happen for example when converting a test file... | aeafaf4cda5bfce44bb054b4c530696901646abe | dc2552d429c91310b0c410c3e856728d8866b05f |
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