Python documentation says that "To build structures with non-native byte order, you can use one of the BigEndianStructure, LittleEndianStructure, BigEndianUnion, and LittleEndianUnion base classes"

However, BigEndianUnion ad LittleEndianUnion are not implemented

>>> from ctypes import *
>>> BigEndianStructure
<class 'ctypes._endian.BigEndianStructure'>
>>> BigEndianUnion
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'BigEndianUnion' is not defined

Is that something that can be added?

See also https://bugs.python.org/issue19023

updated nosy list

Hi there, I'm taking part in 'EnHackathon' spending several days over the next few weeks working on issues. I think this could be a good issue for a small team of first-time contributors with experience in C to work on.
Would anyone be able to offer guidance if we encounter problems?

PR 25480 passes checks and awaits core review. All comments thus far have been addressed.

Any core developers available to review this PR?

New changeset dc2d8404a3ab6288ce112c71da8c65c34cd3087e by Dave Goncalves in branch 'main':
bpo-33178: Add BigEndianUnion, LittleEndianUnion classes to ctypes (GH-25480)
https://github.com/python/cpython/commit/dc2d8404a3ab6288ce112c71da8c65c34cd3087e

Thanks for the contribution!

(our attention spans can be scattered and random, apologies for the delay)