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[BUG] Some functions in 'libcpp' that can throw exceptions are not annotated with <code>except +</code>

C++

defect

Library

Status: Open.

#7289 In cython/cython;

· andrey-khropov opened on Nov 5, 2025

Implement PEP-793 - PyModExport: A new entry point for C extension modules

Code Generation

feature

freethreading CPython

limited api

Status: Open.

#7276 In cython/cython;

· scoder opened on Oct 31, 2025

[ENH] Implement <code>pymutex.locked()</code>

Cython Language Feature

feature

Status: Open.

#7275 In cython/cython;

· scoder opened on Oct 30, 2025

Discard init-time-only constants after use

Code Generation

enhancement

Status: Open.

#7266 In cython/cython;

· scoder opened on Oct 27, 2025

[BUG] memoryview reverse iteration isn't optimized

Status: Open.

#7261 In cython/cython;

· da-woods opened on Oct 25, 2025

Replace <code>PyTuple_Pack</code> (and our list equivalent) with PyTuple_FromArray

Status: Open.

#7258 In cython/cython;

· da-woods opened on Oct 25, 2025

[ENH] Handle properly redeclaration of variable in pure python mode

Pure Python Mode

Status: Open.

#7246 In cython/cython;

· matusvalo opened on Oct 21, 2025

PyLongCompare is redundant with PyLongBinop

cleanup

Status: Open.

#7245 In cython/cython;

· scoder opened on Oct 21, 2025

· 

3.3

[ENH] Compiling ./Demos on WIndows 10 fails to cheese.obj : error LNK2001: unresolved external symbol find_cheeses

Status: Open.

#7233 In cython/cython;

· MironAtHome opened on Oct 18, 2025

[BUG] Compiler crash attempting construction with named initialisation

Status: Open.

#7206 In cython/cython;

· CypherGrue opened on Oct 10, 2025

[BUG] Cython &gt;= 3.1.0 regression on PyPy3.11 7.3.20, affecting httptools

Status: Open.

#7202 In cython/cython;

· mgorny opened on Oct 10, 2025

Use of <code>_PyDict_NewPresized()</code> is not optimal

Status: Open.

#7201 In cython/cython;

· methane opened on Oct 10, 2025