Selected Typeshed stubs for the wrong version

[berdario]

From my understanding, 2and3 stubs should be ovverriden by 3, which should be overriden by 3.5 (assuming 3.5)

After updating to Mypy 0.4.4 (from 0.4.1) though I get a new spurious error:

No overload variant of "itemgetter" matches argument types [builtins.str]

The code for itemgetter here seems correct:

https://github.com/python/typeshed/blob/master/stdlib/3/_operator.pyi

But here instead it's picking up

 def itemgetter(item: int)

https://github.com/python/typeshed/blob/master/stdlib/2and3/operator.pyi

Why is the code from 2and3 used, instead of the more specific one?

[gvanrossum]

Presumably because these are two different modules -- _operator is the builtin one, and operator is the public one. So neither is overriding the other. OTOH I suspect _operator should be deleted since everybody should be using the public one.

I haven't found time to look more into which definition of itemgetter is more correct. Can you cook up a little example demonstrating the error you are getting?

[gvanrossum]

Oh, also, this is in any case an issue for https://github.com/python/typeshed/issues, not for mypy.

[berdario]

Oh, I assumed that since a module like operator usually imports _operator, that mypy would've had some machinery to include that...

Thank you, unfortunately I was a bit in a hurry (otherwise I'd have changed the pyi on my own), but I now reopened this in the typeshed project