Explicit List of Tuple do not support __setitem__ with index

[tharvik]

from typing import List, Tuple

l = []  # type: List[Tuple[int, int]]
l.append((1, 2))

l[0] = 3, 4
l[:] = [(5, 6)]

gives

asd.py:6: error: No overload variant of "__setitem__" of "list" matches argument types [builtins.int, Tuple[builtins.int, builtins.int]]

so __setitem__ with slice works but not with index.

Not specifing the type does work (it is just an example, the code I'm working on need to explicit a specific variable).

I don't think it is an issue in typeshed as playing with builtins.list do not change a thing.
btw, simply exchanging the @overload __setitem__ gives me weirder errors, like

asd.py:1: note: In module imported here:
/home/tharvik/mypy/typeshed/stdlib/3/builtins.pyi: note: In class "list":
/home/tharvik/mypy/typeshed/stdlib/3/builtins.pyi:477: error: Signature of "__setitem__" incompatible with supertype "MutableSequence"
asd.py: note: At top level:
asd.py:6: error: No overload variant of "__setitem__" of "list" matches argument types [builtins.int, Tuple[builtins.int, builtins.int]]

The order shouldn't matter, right? (I didn't see it written in the PEP anyway)

[rwbarton]

This has been fixed by #1596.