Search results

[BUG] compiler crash when abusing iterators

Status: Open.

#7527 In cython/cython;

· CypherGrue opened on Feb 14, 2026

[ENH] Specialise exception raising code

Code Generation

enhancement

performance

Status: Open.

#7523 In cython/cython;

· scoder opened on Feb 13, 2026

Performance degradation when shared utility is enabled

performance

sharedlibCython module for code sharing between multiple modules.Cython module for code sharing between multiple modules.

Status: Open.

#7521 In cython/cython;

· matusvalo opened on Feb 11, 2026

[BUG] cimport fails for "modulename.py" in package "modulename"

Status: Open.

#7520 In cython/cython;

· rpmcnally opened on Feb 11, 2026

[BUG] Python bool casts are inconsistent

Cython Language Feature

defect

Error Reporting

Type Analysis

Status: Open.

#7513 In cython/cython;

· scoder opened on Feb 9, 2026

·  

3.3

[ENH] Generate PyErr_Format() for formatted exception raising

feature

Optimization

Status: Open.

#7512 In cython/cython;

· scoder opened on Feb 9, 2026

[BUG] Windows 3.9 carray_iteration occassionally failing due to disk-space

Status: Open.

#7510 In cython/cython;

· da-woods opened on Feb 8, 2026

[BUG] Optimised comparisons fail to detect that they need the GIL

defect

Type Analysis

Status: Open.

#7500 In cython/cython;

· scoder opened on Feb 5, 2026

·  

3.3

[ENH] Use vectorcall for fused functions

Cython Language Feature

defect

performance

Status: Open.

#7499 In cython/cython;

· scoder opened on Feb 3, 2026

[BUG] Compiling using shared utility raises: <code>AttributeError: 'NoneType' object has no attribute 'is_pyobject'</code>

defect

sharedlibCython module for code sharing between multiple modules.Cython module for code sharing between multiple modules.

Status: Open.

Bug

#7497 In cython/cython;

· matusvalo opened on Feb 2, 2026

[ENH] Add a source-level way to indicate the minimum required Cython version

Status: Open.

#7496 In cython/cython;

· ngoldbaum opened on Feb 2, 2026

cython.inline() is slow

defect

performance

Status: Open.

#7488 In cython/cython;

· scoder opened on Jan 31, 2026