Error for len or enumerate on array.array

[Zac-HD]

array.array objects are essentially efficient lists with a single element type. They have a size and can be iterated over, but mypy doesn't seem to know this:

floats.py:105: error: Argument 1 to "len" has incompatible type "array"; expected "Sized"
floats.py:107: error: Argument 1 to "enumerate" has incompatible type "array"; expected Iterable[<nothing>]

Source.

[gvanrossum]

This could perhaps be fixed by making stdlib/2/array.pyi a (near) clone of stdlib/3/array.pyi. The two could even easily be merged into stdlib/2and3/. (Though I haven't checked if there are changes to the array API in Python 3.)

[Zac-HD]

Closed by #1670, following #1649.