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-133184 | # iOS compiler stubs override environment-based minimum version specifications
# Bug report
### Bug description:
Python includes shims for compiler tools on iOS to match GNU conventions for compiler names (e.g., `arm64-apple-ios-clang`) to avoid encoding a user-specific location to a compiler in sysconfig, and to av... | 6e907c4d1f8583a3fc80ad70232981c589900378 | 811edcf9cda5fb09aa5189e88e693d35dee7a2d1 |
python/cpython | python__cpython-133187 | # Compilation failure with --enable-optimizations and --without-doc-strings.
# Bug report
### Bug description:
`--without-doc-strings` breaks compilation with `--enable-optimizations` as `PROFILE_TASK` has failures, presumably, due to the missing doc strings. 3.12 does not have this problem as `PROFILE_TASK` is allo... | cc39b19f0fca8db0f881ecaf02f88d72d9f93776 | 8b26b23a9674a02563f28e4cfbef3d3e39876bfe |
python/cpython | python__cpython-133240 | # PyType_GetModuleByDef can return NULL without exception set
The [documentation](https://docs.python.org/3/c-api/type.html#c.PyType_GetModuleByDef) does not mention that this is possible, but if the object passed in is not a heap type it returns `NULL` without setting an exception:
```
PyObject *
PyType_GetModuleByD... | fa52f289a36f50d6d10e57d485e5a4f58261222b | 662dd294563ce86980c640ad67e3d460a72c9cb9 |
python/cpython | python__cpython-133170 | # Add a C API function to detect temporaries
# Feature or enhancement
### Proposal:
NumPy has an optimization to detect temporaries created via the NumPy C API (e.g. in NumPy internals) and elide them. This can lead to a significant performance improvement for some operations.
In https://github.com/numpy/numpy/issu... | f2379535fe2d2219b71653782d5e31defd9b5556 | 4701ff92d747002d04b67688c7a581b1952773ac |
python/cpython | python__cpython-134047 | # UBsan: Remove _Py_NO_SANITIZE_UNDEFINED
# Bug report
Split out from the #111178 monster-issue:
We use the macro `_Py_NO_SANITIZE_UNDEFINED` to disable the UB sanitizer in some hard-to-fix cases, so that we can get a stable, regression-monitoring checker sooner.
To fully fix UBsan failures, we should get rid of the... | 0a160bf14c4848f50539e52e2de486c641d122a2 | 22e4a40d9089dde2f1578c4b320f27b20e2e125b |
python/cpython | python__cpython-133176 | # Line beginning `<tab>` gives completion instead of indentation in pdb multi-line input after `interact`
# Feature or enhancement
### Proposal:
Line beginning `<tab>` in multi-line input has inconsistent behavior between before and after the `interact` command.
```
python -c 'import pdb; breakpoint()'
for i in ran... | 327f5ff9fa4291e66079c61c77b273cb953c302f | 0e21ed7c09c687d62d6bf054022e66bccd1fa2bc |
python/cpython | python__cpython-133368 | # test_external_inspection: test_async_global_awaited_by() fails on s390x Fedora Stable Refleaks 3.x
Example: https://buildbot.python.org/#/builders/1641/builds/199
```
FAIL: test_async_global_awaited_by (test.test_external_inspection.TestGetStackTrace.test_async_global_awaited_by)
-----------------------------------... | 8eaaf1640232191319f83917ef72e7853af25681 | a36367520eb3a954c94c71a6b2b64d2542283e38 |
python/cpython | python__cpython-133144 | # Adding an unstable C API for unique references
# Feature or enhancement
### Proposal:
In #132070, there was a race brought up in free-threading through use of `Py_REFCNT(op) == 1`. The fix is to use `_PyObject_IsUniquelyReferenced`.
There were a couple additional comments about how we should handle this for the p... | b275b8f34210bae2fc1e0af23515df5efe911c8e | 0eeaa0ef8bf60fd3b1448a615b6b1662d558990e |
python/cpython | python__cpython-133145 | # Add curses.assume_default_colors()
# Feature or enhancement
This is a refinement of the `curses.use_default_colors()` function which allows to change the color pair 0.
<!-- gh-linked-prs -->
### Linked PRs
* gh-133145
<!-- /gh-linked-prs -->
| 7363e8d24d14abf651633865ea959702ebac73d3 | 3e256b9118eded25e6aca61e3939fd4e03b87082 |
python/cpython | python__cpython-133132 | # iPhone SE simulator no longer available by default in Xcode 16.4
# Bug report
### Bug description:
The iOS testbed attempts to select the "iPhone SE (3rd generation)" simulator as a default option if no simulator is explicitly specified.
However, with the release of the iPhone 16e, Xcode 16.3 no longer ships with... | 42b0b0667e67ff444a03d0e7b217e77f3aae535d | c46635aa5a20fc1b4c5e85370fa0fa2303c47c14 |
python/cpython | python__cpython-133118 | # Enable type checking of `tomllib` stdlib folder
Following example of https://github.com/python/cpython/pull/131509 I propose to add mypy type checking in CI for `tomllib`.
It is fully typed already, we just need to run the CI if something changes.
<!-- gh-linked-prs -->
### Linked PRs
* gh-133118
* gh-133192
* gh-... | 5ea9010e8910cb97555c3aef4ed95cca93a74aab | fd0f5d0a5eba0cc8cce8bed085089b842f45e047 |
python/cpython | python__cpython-133103 | # Negative run-time reported by `subprocess.run`'s `TimeoutExpired` exception when setting `timeout=0`
# Bug report
### Bug description:
```python
import subprocess
subprocess.run(['echo', 'hi'], timeout = 0)
# subprocess.TimeoutExpired: Command '['echo', 'hi']' timed out after -0.00010189996100962162 seconds
# sub... | b64aa302d7bc09454ba8d5b19922ff6a4192dd96 | 78adb63ee198c94c6ce2a1634aa7ea1d47c011ad |
python/cpython | python__cpython-133080 | # Remove Py_C_RECURSION_LIMIT & PyThreadState.c_recursion_remaining
Both were added in 3.13, are undocumented, and don't make sense in 3.14 due to changes in the stack overflow detection machinery. (On current main they contain dummy values.)
SC exception for removal without deprecation: https://github.com/python/ste... | 0c26dbd16e9dd71a52d3ebd43d692f0cd88a3a37 | 208d06fd515119af49f844c7781e1eb2be8a8add |
python/cpython | python__cpython-133074 | # Undefined behavior `NULL + 0` in `list_extend_{set,dict,dictitems}`
# Bug report
Found by @emmatyping.
### Bug description:
This affects `list_extend_{set,dict,dictitems}`, e.g.:
```c
static int
list_extend_set(PyListObject *self, PySetObject *other)
{
Py_ssize_t m = Py_SIZE(self);
Py_ssize_t n = PySet_G... | a99bfaa53cbbb2ebd35bd94237a11bfaefe32665 | 4ebbfcf30e0e2d87ff6036d4d1de0f6f0ef7c46a |
python/cpython | python__cpython-133062 | # Show value of `UINT32_MAX` in HMAC error messages
# Bug report
### Bug description:
Following https://github.com/python/cpython/pull/133027#discussion_r2062730124 and https://github.com/python/cpython/pull/133027#discussion_r2062730751, we should avoid having the textual "UINT32_MAX" or any C constant in a user-fa... | 1b7470f8cbff4bb9e58edd940a997a3647e285e4 | cd76eff26e5f700ffb715d9d096d2e28744d0594 |
python/cpython | python__cpython-133055 | # Always skip `pyrepl` tests that contain `"can't use pyrepl"`
# Bug report
Right now there's a pattern in https://github.com/python/cpython/blob/main/Lib/test/test_pyrepl/test_pyrepl.py
that looks like this:
```python
output, exit_code = self.run_repl(commands, env=env)
if "can't use pyrepl" in output:
self.sk... | b739ec5ab78ed55367516de7a11e732cb3f1081d | 58567cc18c5b048e08307b5ba18a9934a395ca42 |
python/cpython | python__cpython-133084 | # PEP 649: class __annotate__ is shadowed by compiler-generated one
# Bug report
### Bug description:
I'm playing around with PEP 649, PEP 749 annotations and I found this surprising behaviour:
```python
class C:
x: str
def __annotate__(format):
if format != 1:
raise NotImplementedError(... | 345fdce1d024f238c53bc355e90ec1c17e12ec20 | 245cd6c53278006fa34fd7799d32f0884eb7e75d |
python/cpython | python__cpython-133038 | # Deprecate `codecs.open()`
Discussion: https://discuss.python.org/t/deprecating-codecs-open/88135/
`codecs.open()` is used a lot because it was recommended in Python 2.
But `open()` (or `io.open()`) is recommended since Python 3.
It is a time to deprecate `codecs.open()`.
Since it is still widely used, we won't sch... | 4e294f6feb3193854d23e0e8be487213a80b232f | 732d1b02417e91d6a4247879e290065287cc6b51 |
python/cpython | python__cpython-133034 | # `TypeIgnore` is not documented
# Documentation
In [the document of ast module](https://docs.python.org/3.14/library/ast.html), the class `TypeIgnore` is listed in the abstract grammar, but there is no document entry on this page.
<!-- gh-linked-prs -->
### Linked PRs
* gh-133034
* gh-133078
<!-- /gh-linked-prs -->... | 4e04511cb9c176c32d6f3694f426750d710121cd | af3f6fcb7ecd3226b0067e0e1a9a6bfb0657a9ba |
python/cpython | python__cpython-133252 | # Improve the error message for invalid typecodes in `multiprocessing.{Array,Value}`
# Feature or enhancement
### Proposal:
More discussion: https://github.com/python/cpython/pull/132504#issuecomment-2802448414
This is the current message which is not very clear (it comes from `ctypes.sizeof`):
```python
>>> from m... | f52de8a937e89a4d1cf314f12ee5e7bbaa79e7da | 2cd24ebfe9a14bd52cb4d411c126b6a2dac65ae0 |
python/cpython | python__cpython-133019 | # Test Asyncio Utils References futures.TimeoutError Which Does Not Exist
# Bug report
### Bug description:
https://github.com/python/cpython/blob/632524a5cbdd3e999992d0e9e68fe8b464ed16ec/Lib/test/test_asyncio/utils.py#L107C1-L107C37
``asyncio.futures.TimeoutError`` does not exist AFAIK -- we can reproduce this fai... | 8d6d7386a35b4a6fdd7d599f2184780bb83cc306 | 5e96e4fca80a8cd25da6b469b25f8f5a514de8be |
python/cpython | python__cpython-133010 | # UAF: `xml.etree.ElementTree.Element.__deepcopy__` when concurrent mutations happen
# Crash report
### What happened?
Reproducer:
```py
import xml.etree.ElementTree as ET
from copy import deepcopy
class Evil(ET.Element):
def __deepcopy__(self, memo):
root.clear()
return self
root = ET.Element... | 116a9f9b3775c904c98e390d896200e1641498aa | d13d5fdf610a294a6c3dc125e0856fb7fdd41e49 |
python/cpython | python__cpython-133014 | # test_remote_exec fails on Android with PermissionError
Example: https://buildbot.python.org/#/builders/1591/builds/1914
```
ERROR: test_breakpoints (test.test_remote_pdb.PdbConnectTestCase.test_breakpoints)
Test setting and hitting breakpoints.
----------------------------------------------------------------------
... | 0eb0e70ca073cc3eb26611963301ca8258217505 | 314f4b9716c2a3f49f7834d1e12bb2ee6c24a588 |
python/cpython | python__cpython-133007 | # tarfile: Support `preset` argument to `tarfile.open(mode="w|xz")`
# Feature or enhancement
### Proposal:
Currently, `tarfile.open()` doesn't support specifying a compression level / preset when using `mode="w|xz"`. Technically this is documented (via not listing `w|xz` among the modes supporting either `compressle... | 019ee49d50b6466f2f18035c812fa87d20c24a46 | 146b981f764cc8975910066096dc2f6cb33beec6 |
python/cpython | python__cpython-132997 | # Upgrade bundled pip to 25.1.1
# Feature or enhancement
### Proposal:
`ensurepip`'s bundled version of pip gets updated to the current latest 25.1.1.
### Has this already been discussed elsewhere?
No response given
### Links to previous discussion of this feature:
_No response_
<!-- gh-linked-prs -->
### Linke... | a512905e156bc09a20b171686ac129e66c13f26a | ddac7ac59a7dfa4437562b6e705e64865c3b1e9a |
python/cpython | python__cpython-132999 | # Expose C constant `HASHLIB_GIL_MINSIZE`
# Feature or enhancement
### Proposal:
In `hashlib.h`, we have a HASHLIB_GIL_MINSIZE constant that we could expose as `hashlib.GIL_MINSIZE`. For now it's a read-only constant since the constant is shared across multiple modules (`_hashlib` and HACL*-based primitives).
Since... | 3695ba93d54f82d9aaa3e88a246596f69a8c948f | 019ee49d50b6466f2f18035c812fa87d20c24a46 |
python/cpython | python__cpython-132998 | # Add `socket.IP_FREEBIND` constant
# Feature or enhancement
### Proposal:
The socket options exposed by CPython's socket module do not include `IP_FREEBIND`, meaning the option number has to be hardcoded. Examples of this in the wild can be find using GitHub's code search.
### Has this already been discussed else... | 314f4b9716c2a3f49f7834d1e12bb2ee6c24a588 | bd2e5f044c9cb08b8725ab45b05de0115d014bbe |
python/cpython | python__cpython-132988 | # Support __index__() for unsigned integer converters in PyArg_Parse and Argument Clinic
The `__index__()` special method was introduced to make other integer-like types which are not `int` subclasses to be accepted as integer arguments.
It is supported by all `PyArg_Parse` format units for integers, except `k` (long... | 632524a5cbdd3e999992d0e9e68fe8b464ed16ec | e714ead7a2895799b7f2cbded086378d92625a3a |
python/cpython | python__cpython-133018 | # Implement PEP 784 - Adding Zstandard to the Python standard library
# Feature or enhancement
This is a tracking issue for implementing [PEP 784](https://peps.python.org/pep-0784/). See the PEP text for more details.
Since the diff is significant (~10k lines) I wanted to split up the PRs a bit.
### Implementation ... | 20be6ba61ac8a0a5d6242701c4186579cfa653f0 | 6d53b752831c453da115dd4ce54a0d121d9990cd |
python/cpython | python__cpython-133223 | # Remote PDB can't interrupt an infinite loop in an evaluated command
# Bug report
### Bug description:
As @gaogaotiantian pointed out in https://github.com/python/cpython/pull/132451#discussion_r2055068762 PDB's new remote attaching feature can enter an uninterruptible infinite loop if you type `while True: pass` ... | 9434709edf960307431cedd442b22c5b28d03230 | 24ebb9ccfdf78be09253e8a78a906279a1b3e21e |
python/cpython | python__cpython-133067 | # shutil.which doesn't work in Docker container
# Bug report
### Bug description:
```
import shutil
target_fp = shutil.which(head_proc)
if target_fp is not None:
perm = os.stat(target_fp)
# This checks the permission bits as an extra check.
# In a Docker container "which" was not returning
# executa... | d13d5fdf610a294a6c3dc125e0856fb7fdd41e49 | 832058274dd99e30321a5f9a3773038cd0424c11 |
python/cpython | python__cpython-132951 | # test_remote_pdb fails on FreeBSD: Remote debugging is not supported on this platform
Example: https://buildbot.python.org/#/builders/1223/builds/5984
```
ERROR: test_keyboard_interrupt (test.test_remote_pdb.PdbConnectTestCase.test_keyboard_interrupt)
Test that sending keyboard interrupt breaks into pdb.
-----------... | 947c4f19d969578242ccc454ecc4b04c51408b03 | 2a28b21a517775120a7a720adc29cf85111e8bf4 |
python/cpython | python__cpython-133032 | # test_opcache fails randomly (failure or crash)
On a Free Threaded build:
```
$ ./configure --with-pydebug --disable-gil
$ make
$ ./python -m test test_opcache --forever -v
```
Error 1 (easy to reproduce):
```
FAIL: test_load_global_module (test.test_opcache.TestRacesDoNotCrash.test_load_global_module)
-----------... | 31d1342de9489f95384dbc748130c2ae6f092e84 | fe462f5a9122e1c2641b5369cbb88c4a5e822816 |
python/cpython | python__cpython-132931 | # Implement PEP 773
# Feature or enhancement
For tracking work (assuming the PEP is still accepted today as planned - just getting things in place before I go away for the weekend).
- [x] Mark existing installer as deprecated in installer
- [x] Mark existing installer as deprecated in docs
- [x] Add `--preset-pymana... | e20ca6d1b006674be23d16083f273e8a7b8f77b6 | 11f457cf41beede182d7387080f35c73f8f4a46f |
python/cpython | python__cpython-132923 | # test_peg_generator fails when using -Werror: dep_util is Deprecated
Example: https://buildbot.python.org/#/builders/146/builds/11260
```
ERROR: test_advanced_left_recursive (test.test_peg_generator.test_c_parser.TestCParser.test_advanced_left_recursive)
--------------------------------------------------------------... | 1a70f66ea856de1b1b0ca47baf9ee8ba6799ae18 | 79ba56433e5ced7740866d1112b0cead86f627f6 |
python/cpython | python__cpython-133399 | # GC performance regression in free threaded build
# Bug report
### Bug description:
I've identified a significant performance regression when using Python's free-threaded mode with shared list appends. In my test case, simply appending to a shared list causes a 10-15x performance decrease compared to normal Python ... | 5c245ffce71b5a23e0022bb5d1eaf645fe96ddbb | 8e08ac9f32d89bf387c75bb6d0710a7b59026b5b |
python/cpython | python__cpython-132919 | # Detect buffer overflow in fcntl.fcntl() and fcntl.ioctl()
`fcntl()` and `ioctl()` take an argument which can be a pointer to a buffer of unspecified length, depending on operation. They can also write in that buffer, depending on operation. A temporary buffer of size 1024 is used, so a chance of directly overflowing... | c2eaeee3dc3306ca486b0377b07b1a957584b691 | 0f84f6b334e4340798fb2ec4e1ca21ad838db339 |
python/cpython | python__cpython-132914 | # test_remote_pdb hangs randomly
Example on "Hypothesis tests on Ubuntu": https://github.com/python/cpython/actions/runs/14660752238/job/41144501229?pr=132906
```
(...)
0:46:29 load avg: 0.00 running (1): test_remote_pdb (43 min 3 sec)
0:46:59 load avg: 0.00 running (1): test_remote_pdb (43 min 33 sec)
0:47:29 load a... | eb2e430b88afa93e7bfc05f4346e8336c2c31b48 | e8cf3a1a641d6fa0bfa84a4f8363ff1e42abda30 |
python/cpython | python__cpython-132911 | # Possible (benign) overflow for 'K' format code in `do_mkvalue`
# Bug report
### Bug description:
This is probably not an issue but here are the known "temporary" overflows:
```c
// format = 'K'
return PyLong_FromUnsignedLongLong((long long)va_arg(*p_va, unsigned long long));
```
Note that `va_arg(*p_va, unsigned... | 3fa024dec32e2ff86baf3dd7e14a0b314855327c | de6482eda3a46cc9c9a03fb9ba57295ab99b4722 |
python/cpython | python__cpython-132935 | # Have math.isnormal() and, perhaps, math.issubnormal()?
# Feature or enhancement
### Proposal:
Of course, these functions can be emulated in pure-Python.
On another hand, people can reasonably expect these classifiers as "The [math](https://docs.python.org/3.14/library/math.html#module-math) module consists mostly... | 5f61cde80a9b33c8e118b1c009fe2aaa4bb87356 | 128195e12eb6d5b9542558453df7045dd7aa1e15 |
python/cpython | python__cpython-137118 | # REPL: AttributeError: module `__mp_main__` has no attribute `is_prime` in `ProcessPoolExecutor` example
# Bug report
### Bug description:
python version:3.12.9
An error occurred when running as a standalone script.
An error message is reported when running the sample code of the python document:
Traceback (most r... | 4e40f2bea7edfa5ba7e2e0e6159d9da9dfe4aa97 | 6784ef7da7cbf1a944fd0685630ced54e4a0066c |
python/cpython | python__cpython-132895 | # Improve accuracy of NormalDist.cdf
### Proposal:
Replace the `1 + erf(s)` computation with `erfc(-s)` as suggested in this [StackOverflow discussion](https://stackoverflow.com/questions/37891569) and hinted in this [John Cook blog post](https://www.johndcook.com/blog/2010/06/07/). The core idea is to exploit the i... | 63da5cc1504f066b31374027f637b4b021445d6b | b1fc8b69ec4c29026cd8786fc5da0c498c7dcd57 |
python/cpython | python__cpython-133208 | # Socket file descriptor races in GIL-enabled build
# Bug report
In the free threading build, but not the default GIL-enabled build, the reads and writes `sock_fd` use relaxed atomics.
This can lead to data races because the `sock_fd` field is read when the GIL is released.
https://github.com/python/cpython/blob/e... | 2d82ab761ab8051440e486ca68355514f3df42aa | 7d129f99ab8e7ef9382e5e5c7bb4e51ecf74e894 |
python/cpython | python__cpython-132883 | # [3.14 regression] Cannot copy Union containing objects that do not implement `__or__`
# Bug report
### Bug description:
In 3.13 it was possible to copy a Union containing any object:
```
>>> copy.copy(typing.Union[b"x", b"y"])
typing.Union[b'x', b'y']
```
But in main this fails:
```
>>> copy.copy(typing.Union[b... | e1c09fff054ebcb90e72bba25ef7332bcabec92b | 9f5994b94cb6b8526bcb8fa29a99656dc403e25e |
python/cpython | python__cpython-133135 | # math.ldexp gives incorrect results on Windows
# Bug report
### Bug description:
```python
>>> import math
>>> math.ldexp(6993274598585239, -1126)
5e-324
>>>
```
The correct result would be 1e-323. This is obviously a bug in the Windows ldexp implementation (it works fine on Linux). But it would be good, if it coul... | cf8941c60356acdd00055e5583a2d64761c34af4 | 0e3bc962c6462f836751e35ef35fa837fd952550 |
python/cpython | python__cpython-132872 | # Use _Alignof to query alignments in the struct module
# Feature or enhancement
### Proposal:
The struct module uses pre-C11 hacks to determine alignment for types:
https://github.com/python/cpython/blob/580888927c8eafbf3d4c6be9144684117f0a96ca/Modules/_struct.c#L79-L106
Now we can use `_Alignof` operator, as C11-... | ecd03739f87889bb2f173e0a476d26b468c776c9 | c292f7f56311b305c673415651c919a7633d36cc |
python/cpython | python__cpython-132860 | # sys.remote_exec() scripts run in the `__main__` namespace
# Bug report
### Bug description:
The scripts injected by `sys.remote_exec` run in the context of the `__main__` module, meaning that they unintentionally overwrite variables used in the main script. For instance, given a `loop_forever.py` containing:
```py... | a94c7528b596e9ec234f12ebeeb45fc731412b18 | 402dba29281c1e1092ff32875c91f23bacabb677 |
python/cpython | python__cpython-132828 | # "unhashable type" is a beginner-unfriendly error message
# Feature or enhancement
### Proposal:
Every time I'm teaching dicts and sets to beginners, someone tries to use lists or other mutable data structures as dict keys or set members. The error message in that case is unhelpful, because it describes the problem... | 426449d9834855fcf8c150889157af8c39526b81 | b2e666f30aa66b3f5e7ccbcf4e5f21e2d89e39a8 |
python/cpython | python__cpython-135606 | # test__opcode fails with missing 'jump_backward' in specialization stats
# Bug report
### Bug description:
When running the `test__opcode` test with a build that uses `--enable-pystats`, there is a mismatch between the expected specialized opcodes and the actual ones. The test is expecting `jump_backward` in the sp... | a9e66a7c506680263b39bc8c150ddc5e72213c45 | acc20a83f4d93682e91c4992c785eaf7e3d0c69c |
python/cpython | python__cpython-133209 | # `csv.writer` with `QUOTE_NONE` still requires non-emtpy `quotechar` and `escapechar`
# Bug report
### Bug description:
I'd like to output all quotes verbatim, without any escaping/quoting, but this fails:
```python
import csv
w = csv.writer(open('test.tsv', 'w'), delimiter = '\t', quoting = csv.QUOTE_NONE)
w.writ... | 536a5ff15357a7d616c8226a642443e699f30244 | 980a56843bf631ea80c1486a367d41031dec6a7e |
python/cpython | python__cpython-132799 | # Schedule removal of PyUnicode_AsDecoded/Encoded functions
- PyUnicode_AsDecodedObject
- PyUnicode_AsDecodedUnicode
- PyUnicode_AsEncodedUnicode
- PyUnicode_AsEncodedObject
Were deprecated in 3.6 in https://github.com/python/cpython/commit/0093907f0ed88c6aa3561cc4328154ae907bc976 by @serhiy-storchaka
They have... | f6fb498c9759bc4ab615761639c5147d2d870c56 | 8783cec9b67b3860bda9496611044b6f310c6761 |
python/cpython | python__cpython-132782 | # NotShareableError Should Inherit from TypeError
# Bug report
### Bug description:
Shareability is a feature of types, not values, so `NotShareableError` should be a subclass of `TypeError`, not `ValueError`.
### CPython versions tested on:
3.14, CPython main branch
### Operating systems tested on:
_No response... | ca12a744abd02d0d36adfb1444c1ba31623d617d | 8a4d4f37abb9fa639fdc5d7003c4067904cdcc6b |
python/cpython | python__cpython-132780 | # Tools/build/generate_global_strings.py Doesn't Handle Duplicates Correctly
# Bug report
### Bug description:
I'll have a fix up shortly.
### CPython versions tested on:
CPython main branch
### Operating systems tested on:
_No response_
<!-- gh-linked-prs -->
### Linked PRs
* gh-132780
<!-- /gh-linked-prs -->
| 9be364568835e467199ccd65bbcd786f9c8171dc | 09b624b80f54e1f97812981cfff9fa374bd5360f |
python/cpython | python__cpython-132779 | # memoryview Cross-Interpreter Data Has Some Minor Issues
# Bug report
### Bug description:
* dealloc is incomplete
* errors aren't handled quite right
* buffer not cleaned up if xidata never used
* some minor cleanup is needed
### CPython versions tested on:
CPython main branch
### Operating systems tested on:
... | b5bf8c80a921679b23548453565f6fd1f79901f2 | a4ea80d52394bafffb2257abbe815c7ffdb003a3 |
python/cpython | python__cpython-132974 | # Improvements to test.support.interpreters.Interpreter
`Interpreter.call()` should be able to support arbitrary callables, full args, and return values.
<!-- gh-linked-prs -->
### Linked PRs
* gh-132974
* gh-132977
* gh-132978
* gh-132979
* gh-132981
* gh-133101
* gh-133107
* gh-133108
* gh-133128
* gh-133221
* gh-1... | 6f0432599297635492597e3766259390e8331c62 | b739ec5ab78ed55367516de7a11e732cb3f1081d |
python/cpython | python__cpython-132770 | # Static analysis reveals that `tok_mode->last_expr_buffer[i] != '\0' && i < input_length` is not safe
# Bug report
This code can be improved:
https://github.com/python/cpython/blob/132b6bc98f47a4d897dead8635b5a50a0baee485/Parser/lexer/lexer.c#L143
It would be safer to first check the value of `i` and then try to a... | ea8ec95cfadbf58a11ef8e41341254d982a1a479 | 8516343d3aeb12e5871ecd1701649fd1fcf46fc0 |
python/cpython | python__cpython-133627 | # dict_set_fromkeys() calculates size of dictionary improperly
# Bug report
### Bug description:
The function dict_set_fromkeys() in the file dictobject.c adds elements of an iterable to an existing dictionary. The size of the expanded dictionary is estimated as PySet_GET_SIZE(iterable) and the size of the existing ... | 421ba589d02b53131f793889d221ef3b1f1410a4 | 2d82ab761ab8051440e486ca68355514f3df42aa |
python/cpython | python__cpython-132759 | # Build fails with --enable-pystats and --with-tail-call-interp due to undeclared lastopcode variable
# Bug report
### Bug description:
When attempting to build CPython with both the `--enable-pystats` and `--with-tail-call-interp` options,
the build fails with errors about an undeclared identifier `lastopcode`.
#... | 6430c634da4332550744fe8f50b12c927b8382f6 | de9deb7ca7120fbb5cbbb53044ce91087065e723 |
python/cpython | python__cpython-132772 | # SIGSEV with method descriptors called without a second argument
# Crash report
### What happened?
Since Python 3.12, the following code triggers a segmentation fault:
```python
import _io, sys; _io._TextIOBase.detach.__get__(sys.stderr)
```
### CPython versions tested on:
3.9, 3.11, 3.12, 3.13, 3.14
### Opera... | fa70bf85931eff62cb24fb2f5b7e86c1dcf642d0 | c8e0b6e6849fc3d93c33050b43fe866391625157 |
python/cpython | python__cpython-132756 | # Rewrite the fcntl module
The current code of the `fcntl` module is a little mess. This was caused particularly by the nature of the underlying C API (`fcntl()` and `ioctl()` take an argument as a C int or a pointer to a structure, and the type of the argument, as well as the size of the structure is not explicitly s... | a04390b4dad071195f834db347aa686292811051 | 78cfee6f0920ac914ed179c013f61c53ede16fa9 |
python/cpython | python__cpython-132738 | # cProfile cannot run code that pickles objects defined in __main__
# Bug report
### Bug description:
```python
import pickle
import sys
from dataclasses import dataclass, field
@dataclass
class State:
x: list[int] = field(default_factory=list)
print(pickle.dumps(State([0])))
```
The following code will run ... | c7a7aa9a57c25ef2666f7dbf62edab882747af6b | e1c09fff054ebcb90e72bba25ef7332bcabec92b |
python/cpython | python__cpython-132735 | # Add constants for Bluetooth socket support
The support of Bluetooth sockets was fixed and many new features were added in the last month. But while code was changed, the constants that can be used with it were not always added. The proposed PR adds a lot of constants and updates the documentation.
<!-- gh-linked-pr... | e84624450dc0494271119018c699372245d724d9 | 05d0559db04743aa47d485d53437edbb31d8e967 |
python/cpython | python__cpython-133035 | # Improve `sysconfig` CLI
### Proposal:
Currently, the `sysconfig` module's CLI is fairly hidden and inaccessible. I think there are two main issues with the module CLI.
1. There is no "Command Line Interface" section of the [docs](https://docs.python.org/dev/library/sysconfig.html) (only have [example](https://docs... | 0f84f6b334e4340798fb2ec4e1ca21ad838db339 | ee9102a53565f694c37ca1bcc6bb1239db7207d9 |
python/cpython | python__cpython-132774 | # AMD64 FreeBSD14/15 3.x multiprocessing test failures
# Bug report
### Bug description:
I don't know which one is the faulty commit so I'm tagaging everyone involved in the recent failures of this build bot.
The build bot is failing since https://github.com/python/cpython/commit/0c356c865a6d3806724f54d6d463b2e5289... | c8e0b6e6849fc3d93c33050b43fe866391625157 | 01317bb449612ea1dbbf36e439437909abd79a45 |
python/cpython | python__cpython-132801 | # Segfault in `union_repr` from `list_repr_impl` in free-threaded build
# Crash report
### What happened?
Calling `repr` in many threads on a list containing a large `typing.Union` segfaults in a free-threaded build:
```python
import abc
import builtins
import collections.abc
import itertools
import types
import ty... | a4ea80d52394bafffb2257abbe815c7ffdb003a3 | 722c501dba2db391012aa1530144ecdfbddec9e8 |
python/cpython | python__cpython-132901 | # uuid.getnode() is not tied to MAC address when using `libuuid`
# Bug report
### Bug description:
According to the docs, [uuid.getnode()](https://docs.python.org/3/library/uuid.html#uuid.getnode) is meant to return a number based on the MAC address of the network interface. However, if Python is built with `libuuid... | 9eb84d83e00070cec3cfe78f1d0c7a7a0fbef30f | cb8045e86c4fadfd847d614193f2b38ec03933b8 |
python/cpython | python__cpython-132690 | # data race in PyMember_GetOne with _Py_T_OBJECT
When running ctypes tests using parallel threads the following data race is reported:
```console
WARNING: ThreadSanitizer: data race (pid=73865)
Read of size 8 at 0x7fadbc570760 by thread T1391:
#0 PyMember_GetOne /home/realkumaraditya/cpython/Python/structmember... | 7fd708b727fe19403726da6cb912b81768a96946 | e77d6784e754d9d656238bb5691534857598c000 |
python/cpython | python__cpython-132790 | # Enum `_missing_` function changes `__contains__` behaviour
# Bug report
### Bug description:
I observed different behavior for Enum `__contains__` in 3.13.2 and 3.13.3 if there is `_missing_` method implemented:
```python
from enum import Enum
class Color(Enum):
RED = 1
@classmethod
def _missing... | 22bc953aa9be3039629dd1315f856d2522619412 | 63da5cc1504f066b31374027f637b4b021445d6b |
python/cpython | python__cpython-132679 | # Add --prioritize to regrtest
From the added help:
```
--prioritize TEST1,TEST2,...
select these tests first, even if the order is randomized.
--prioritize is used to influence the order of selected tests, such that
the tests listed as an argument are executed first. This is especially
useful when c... | a594008d9e6c4d37ff6fd698395cd318d7ec3300 | d134bd272f90bfc2dfb55b126d4552c996251fc1 |
python/cpython | python__cpython-132675 | # Compiler warnings on free-threaded build for `_hashopenssl.c`
# Bug report
### Bug description:
I get the following warnings since https://github.com/python/cpython/pull/128886, which was backported to 3.13.
```text
./Modules/_hashopenssl.c:416:69: warning: passing 'const EVP_MD *' (aka 'const struct evp_md_st *'... | 2df0f8804701cc17674e5b4e90499e9fac71d0e1 | 379352620ce4d77f7248939a4cf211db48fdd241 |
python/cpython | python__cpython-132676 | # `_align_ = 0` segfaults when used with empty filed list (`_fields_ = []`)
# Crash report
### What happened?
Tested on the latest `ubuntu:25.04` docker image.
```python
from ctypes import Structure
class MyStructure(Structure):
_align_ = 0
_fields_ = []
```
Crashes with `Floating point exception` on CPyth... | 678b8e165646e72a2f39f017ad237210d3d481ef | 40ae88988c61638ee8625e5c0ee73606ede307bb |
python/cpython | python__cpython-132669 | # Outdated description in `library/dis.rst`
# Documentation
In [`POP_JUMP_IF_NOT_NONE` document](https://docs.python.org/3/library/dis.html#opcode-POP_JUMP_IF_NOT_NONE) and `POP_JUMP_IF_NONE` document, the part "This opcode is a pseudo-instruction, ..." is now incorrect as mentioned in the immediately following note.... | 7e2672cfcf993e957c9966a88931fe6571affd24 | 2df0f8804701cc17674e5b4e90499e9fac71d0e1 |
python/cpython | python__cpython-132650 | # PC/layout script forcibly disables --include-tcltk on ARM64
# Bug report
This was important back before it would build, but we should allow including it now.
<!-- gh-linked-prs -->
### Linked PRs
* gh-132650
* gh-132656
<!-- /gh-linked-prs -->
| b87189deae7cdd65083da60cf3ba6e5bba117663 | cf59bc3ae7d34060e55542b6df6786aa2d9a457c |
python/cpython | python__cpython-132653 | # Possible data race between specialize_attr_loadclassattr and ensure_nonmanaged_dict under free-threading
# Bug report
### Bug description:
I built main branch and observed the following races under free-threading in cpython 3.14 (Python 3.14.0a7+ experimental free-threading build (heads/main:e42bda94411, Apr 17 20... | f3d877a27abca355f9d05decf3e2ce0874983288 | 80295a8f9b624c8d962b1df6bc9b89049e11bcf5 |
python/cpython | python__cpython-133825 | # Document how to format a `timedelta` in human-readable form
### Bug description:
```python
dt_utc = datetime.now(timezone.utc).replace(microsecond=1)
dt_utc_str = dt_utc.strftime("%Y-%m-%d %H:%M:%S")
print(f"timenow : dt_utc_str : {dt_utc_str}")
if self.timezone:
print(f"timenow : timezone : {self.timezone}")
... | efcc42ba70fb09333a2be16401da731662e2984b | 76c0b01bc401c3e976011bbc69cec56dbebe0ad5 |
python/cpython | python__cpython-133787 | # Data race between compare_generic and insert_combined_dict under free-threading
# Bug report
### Bug description:
I built main branch and observed the following races under free-threading in cpython 3.14 (Python 3.14.0a7+ experimental free-threading build (heads/main:e42bda94411, Apr 17 2025, 14:08:39) [Clang 18.1... | 9ad0c7b0f14c5fcda6bfae6692c88abb95502d38 | 35f47d05893e012e9f2b145b934c1d8c61d2bb7d |
python/cpython | python__cpython-132640 | # Add PyLong_AsNativeBytes and PyLong_FromNativeBytes to the stable ABI
# Feature or enhancement
As was originally planned. These have been out in 3.13, and while it is most prominently used in Cython, has been broadly validated to be safe enough for stable ABI addition.
<!-- gh-linked-prs -->
### Linked PRs
* gh-13... | 09b624b80f54e1f97812981cfff9fa374bd5360f | 70b322d3138311df53bc9fc57f174c8e9bdc2ab5 |
python/cpython | python__cpython-134815 | # `dict.update()` mutation check too broad
# Bug report
The [`dict.update()`](https://docs.python.org/3/library/stdtypes.html#dict.update) modification check can be erroneously triggered by modifications to *different* dictionaries that happen to [share the underlying keys objects](https://peps.python.org/pep-0412/).... | d8994b0a77cc9821772d05db00a6ab23382fa17d | 4c15505071498439407483004721d0369f110229 |
python/cpython | python__cpython-132609 | # A sample code for `ast.While` should be colored correctly like the other examples.
# Documentation
A sample code for [ast.While](https://docs.python.org/3/library/ast.html#ast.While) currently looks like this:
Currently, all... | f5512a2498d0d99197f4f12b37d004fdf6deec85 | 25717ff4bfcd5621eddb9439c690da8fa206ea10 |
python/cpython | python__cpython-132586 | # The new `multiprocessing.[R]Lock.locked()` method fails.
# Bug report
### Bug description:
Maybe I didn't quite understand what this feature did, but I think there's a bug when using the `locked()` method with a `multiprocessing.[R]Lock`.
Here is an example:
```
import multiprocessing as mp
def acq(lock, event):... | 15c75d7a8b86d9f76982f70a00b69b403458694f | 0c356c865a6d3806724f54d6d463b2e5289f6afa |
python/cpython | python__cpython-132663 | # Mysterious /home/buildbot/.debug/ directory is filling the disk of AArch64 Fedora buildbots
On two AArch64 Fedora buildbot workers, there is a mysterious `/home/buildbot/.debug/` directory which contains more than 70 GB of random files. I don't know what created these files but there are filling the disk.
It may be... | e01e5829020e517eb68a47da4dd65926a9d144de | 7e2672cfcf993e957c9966a88931fe6571affd24 |
python/cpython | python__cpython-132616 | # Segfault/abort from calling `BytesIO` `unshare_buffer` in threads on a free-threaded build
# Crash report
### What happened?
This seems to be almost the same issue as https://github.com/python/cpython/issues/111174, but for free-threaded builds.
In a free-threaded build it's possible to segfault (rare on debug bu... | 5dd3a3a58cca4798ebfc2edd673211067453e81e | bd7c5859c6c4f23877afdf6ab7b8209de50127a6 |
python/cpython | python__cpython-132701 | # threading.Thread.native_id for forking thread wrong after fork
# Bug report
### Bug description:
On Linux, native thread IDs are unique across processes. This means that the native thread ID of a forking thread necessarily changes at forking. The threading module initializes the thread ID only when the thread is s... | 6b735023132a4ac9dc5b849d982104eeb1e8bdad | 86397cf65d024a39ae85b81d7f611ad4864a78b4 |
python/cpython | python__cpython-132537 | # PY_THROW event can't be turned off for pdb's monitoring backend
# Bug report
### Bug description:
```python
def gen():
yield 1
def f():
breakpoint()
g = gen()
try:
g.throw(TypeError)
except TypeError:
pass # line 10
f()
```
```
b 10
c
```
```
Traceback (most recent call las... | d19af00b90d94cd987293c479b8c3ef698bf7d3e | 4f10b93d1b2f887b42ad59168a9fcbe75bdaaf87 |
python/cpython | python__cpython-132572 | # test_timeout fails with "ENV CHANGED"
# Bug report
### Bug description:
When upgrading python 3.13 for openSUSE it suddenly fails with `== Tests result: ENV CHANGED then ENV CHANGED ==` Despite the error, I have not been able to collect any more reasonable error message in [our build log](https://github.com/user-a... | 82f74eb2344cdb3197c726d1216e413ee61a30b3 | 4b15d105a2b954cce2d97646ebf9e672d3a23b45 |
python/cpython | python__cpython-132529 | # Outdated error message when passing an invalid typecode to `array.array` constructor
# Bug report
### Bug description:
This issue is suitable for a first-time contributor.
The `'w'` typecode is [supported](https://docs.python.org/3.14/library/array.html#module-array) but the error message does not mention it:
``... | 52454c5d59c50147233f4229497a655e6e8c8408 | eb2e430b88afa93e7bfc05f4346e8336c2c31b48 |
python/cpython | python__cpython-132516 | # `test_dataclass_derived_generic_from_slotted_base` is duplicated
# Bug report
### Bug description:
`test_dataclass_derived_generic_from_slotted_base` is duplicated (regression introduced in fa9b9cb11379806843ae03b1e4ad4ccd95a63c02):
```py
def test_dataclass_derived_generic_from_slotted_base(self):
T = typing.... | 45c447bf91ffabe4c0ba6d18f37d4e58925d5c91 | 4865c09cf3055de2f69abda27c9e971b0fcf98bd |
python/cpython | python__cpython-132545 | # Exception unwinding might be broken when handling a memory error.
# Bug report
### Bug description:
Exception unwinding can sometimes push an integer to the stack to support re-raising an exception from an earlier position. Creating this integer might need memory allocation and could fail when handling a memory er... | ccf1b0b1c18e6d00fb919bce107f2793bab0a471 | caee16f05229de5bc5ed2743c531f1696641888a |
python/cpython | python__cpython-132492 | # annotationlib: Rename value_to_string to type_repr
See https://github.com/python/typing_extensions/issues/544
<!-- gh-linked-prs -->
### Linked PRs
* gh-132492
<!-- /gh-linked-prs -->
| 11f66038453dff51ba4ee80460e30acf276d472a | 5e80fee41a61bbb39c6054c5a5d82dc80b1adf8a |
python/cpython | python__cpython-132778 | # SystemError: compiler_lookup_arg(name='name_1') with reftype=7 failed in <genexpr>
# Crash report
### What happened?
I found the following issue by fuzzing with pysource-codegen.
This script failed to compile the given code to bytecode:
``` python
code="""
(name_3): name_5
name_4: (
name_4
async for (
... | 01317bb449612ea1dbbf36e439437909abd79a45 | 08e331d05e694b5ed3265556ea345b9b19a187da |
python/cpython | python__cpython-132475 | # Building a `ctypes.CField` with wrong `byte_size` aborts
# Crash report
### What happened?
The following code will cause an abort due to `byte_size` not matching the size of `ctypes.c_byte`, failing an assertion that `byte_size == info->size`.
```python
import ctypes
ctypes.CField(name="a", type=ctypes.c_byte, by... | 3b4b56f46dbfc0c336a1f70704f127593ec1f4ce | f663b2c56a2eecc258d2abd54ed33836d070e6f5 |
python/cpython | python__cpython-132460 | # Consider making `staticmethod` and `classmethod` generic
# Feature or enhancement
Typeshed defines `staticmethod` and `classmethod` as generics:
1. https://github.com/python/typeshed/blob/f6216ec6230aa51fe7e23afca30a8f5b18ace476/stdlib/builtins.pyi#L137
2. https://github.com/python/typeshed/blob/f6216ec6230aa51fe7e... | a36367520eb3a954c94c71a6b2b64d2542283e38 | c8f233c53b4634b820f2aa0efd45f43d9999aa1e |
python/cpython | python__cpython-132450 | # Improve syntax error messages for keywords with typos
Currently, when users make typos in Python keywords, they receive generic "invalid syntax" error messages without any helpful suggestions about what might be wrong. This creates a frustrating experience, especially for beginners who might not immediately recogni... | bf3a0a1c0f2f63867c537d80cc7163ea8426bf2a | 3cfab449ab1e3c1472d2a33dc3fae3dc06c39f7b |
python/cpython | python__cpython-132440 | # New REPL on Windows swallows characters entered via AltGr
# Bug report
### Bug description:
E.g. on my keyboard with German layout, `{` is usually entered via pressing the [AltGr key](https://en.wikipedia.org/wiki/AltGr_key) and `7`, i.e. `AltGr+7`.
Likewise, `}`, `[`, `]`, `\` and some more can only be entered ... | 07f416a3f063db6b91b8b99ff61a51b64b0503f1 | b6c2ef0c7a1e344681f9a8649bb662208ffd01cf |
python/cpython | python__cpython-132436 | # Test syntax warnings emitted in a `finally` block
This is a followup to https://github.com/python/cpython/pull/131993
For context: https://github.com/python/cpython/pull/131993#issuecomment-2798777909
> Please add also a compile() test for a warning emitted in the finally block. Currently it is emitted twice becau... | 887eabc5a74316708460120d60d0fa4f8bdf5960 | fc7e4e7bbd5d459b76b96991413569a5b7889fbe |
python/cpython | python__cpython-132431 | # Bluetooth socket support is disabled on NetBSD and DragonFly BSD
Despite that there is a code to support Bluetooth sockets on NetBSD and DragonFly BSD, it did not work from 2010 (see 2501aca6281500ecc31cccdd4d78977c84c9e4f6, 3e85dfd15e36b7d890fb70a6c9edf0b1e6bbff6c) due to error in conditional compilation. Condition... | f2f86d3f459a89273ea22389bb57eed402908302 | 9634085af3670b1eb654e3c7820aca66f358f39f |
python/cpython | python__cpython-132418 | # ctypes: NULL-dereference when using py_result restype
# Crash report
### What happened?
When using `ctypes` with a function which returns a `PyObject *`, using `restype` `ctypes.py_object`, and the function returns `NULL`, there's a `Py_DECREF` of the result, leading to a segfault:
```python
import ctypes
PyErr_O... | 2aab2db1461ef49b42549255af16a74b1bf8a5ef | e0dffc54b888a18ad22e83411c2b615cc94a1fdf |
python/cpython | python__cpython-132400 | # UBSan: undefined behaviours when using `-fsanitize=undefined -fno-sanitize-recover` on free-threaded build
# Bug report
### Bug description:
This issue mirrors #111178 but is dedicated to tracking UB failures for the free-threaded build. There should be only two free-threaded-specific issues and the rest are track... | a81232c769a4f67ee312c5c67a2148c54c6570d0 | 292a7248cda89f497e06eff4aa0147d6ff22f6bb |
python/cpython | python__cpython-132397 | # Lint `Lib/test` with existing `ruff` configuration
# Feature or enhancement
### Proposal:
There is an existing `.ruff.toml` file in `Lib/test` with some todo to fix.
### Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
### Links to previous di... | 1d5dc5f1c37ce28a635386189020cf49b3f7f1c3 | 4c3d187d9f143eee930a88a38b90f4842911b8be |
python/cpython | python__cpython-132391 | # Lint `Tools/build` using existing ruff configuration
# Feature or enhancement
### Proposal:
There is an existing `Tools/build/.ruff.toml` that is for now only used by the `check-warnings.py` script. I've tried to minimize the number of changes but I ran `ruff check Tools/build` and selectively disabled some existi... | 5d8e432d9ffa8285ca67833a54a07c52c58d79f3 | 246ed23456658f82854d518ad66d52652f992591 |
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