error for using collections.namedtuple

[Akuli]

Feature

error for using collections.namedtuple

Pitch

if you use collections.namedtuple, you get implicitly Any types everywhere

[sobolevn]

Why? It is valid python. And it very widely used for older versions / cross-version compat. For example, in psutil.

Related #11206

[Akuli]

It is not suitable for all projects, and shouldn't be enabled by default, maybe not even with --strict. But I would use it in new code.

[emmatyping]

I think this is something you could make a flake8 lint for, or if you prefer a mypy plugin, but we won't be adding this, as it isn't really part of the goals of mypy.

[Akuli]

Yeah, I was about to comment that I realized it is more of a linter thing.