cpython icon indicating copy to clipboard operation
cpython copied to clipboard

The Python programming language

Results 1387 cpython issues
Sort by recently updated
recently updated
newest added

# Bug report ### Bug description: Now, let's open a flask app here: ```python from flask import Flask, make_response app = Flask(__name__) @app.route('/') def set_cookie(): response = make_response("Cookie has been...

type-bug
stdlib

BPO | [37339](https://bugs.python.org/issue37339) --- | :--- Nosy | @serhiy-storchaka, @eryksun, @jstasiak, @eike-fokken *Note: these values reflect the state of the issue at the time it was migrated and might not...

docs

# Bug report ### Bug description: ```python Python 3.14.0b3 free-threading build (main, .... >>> import sys >> sys.version '3.14.0b3 free-threading build (main, .... ``` @rgommers advised that https://github.com/python/steering-council/issues/221#issuecomment-1841593283 decision was...

type-bug
topic-free-threading

PR for #135768, Thanks! * Issue: gh-135768

awaiting merge

# Bug report I had a look at `os.path.ismount()`: https://github.com/python/cpython/blob/43a6deadbb40bc93e0eaebb3c56c34f8a3502132/Lib/posixpath.py#L186-L216 And it may have some issues: 1. The documentation already says, that it isn't capable of detecting bind-mounts of some...

type-bug
docs

# Bug report ### Bug description: A message header generated by `email.message.Message` can contain invalid RFC 2047 encoded-words. ```python import sys from email.message import Message from email.policy import SMTP msg...

type-bug
stdlib
topic-email

While trying to find the root cause of the linked issue, I observed that the type cache was holding an obsolete reference. Because the type cache holds borrowed references, this...

awaiting core review

I did ``` ./configure --enable-optimizations --enable-shared ax_cv_c_float_words_bigendian=yes ``` and it failed with the error messages [in the attached log](https://github.com/user-attachments/files/20935310/python.log). The compiler is GCC 5.5.0 and `configure` set the C standard...

type-bug
interpreter-core
build
OS-unsupported

These APIs are used in CPython's interpreter loop. Alternate interpreter loops can be created using the `cases_generator` script with an additional input file that can be plugged in using PEP...

awaiting core review
skip news

# Bug report ### Bug description: When `cibuildwheel` runs the `musllinux_1_2_i686` configuration, I often see exceptions logged when the end-of-process GC runs: ``` Exception ignored in: Traceback (most recent call...

type-bug
stdlib
3.13
3.14
3.15