Feature or enhancement

Proposal:

This issue is to make the concept of "named tuple" support the __replace__ protocol.

collections.namedtuple and typing.NamedTuple already support the __replace__ protocol in:

• gh-108751: Add copy.replace() function #108752

PyStructSequences are also named tuples but they do not support the __replace__ protocol yet.

It would be convenient if PyStructSequence be supported in copy.replace().

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

• Add generalized replace() function #108751
• https://discuss.python.org/t/generalize-replace-function/28511
• Also test typing.NamedTuple with copy.replace #109956
• Add support of SimpleNamespace in copy.replace() #109174
• gh-109174: Add support of SimpleNamespace in copy.replace() #109175

Linked PRs

• gh-110222: Add support of PyStructSequence in copy.replace() #110223