Feature or enhancement

Proposal:

Currently this code is failing:

class A:
  pass

class B(A, typing.NamedTuple):
  x: int

Raising:

TypeError: can only inherit from a NamedTuple type and Generic

But this code is not:

class A:
  pass

class _B(typing.NamedTuple):
  x: int

class B(A, _B):
  pass

B(x=1)

I believe those 2 snippets are mostly equivalent (the final B class behave the same), so it's confusing and force boilerplate that class B(A, typing.NamedTuple): fail.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-116241: Add support of multiple inheritance with typing.NamedTuple #31781