Importing generic type aliases

[dmzkrsk]

lib.py:

from typing import Callable, TypeVar, Tuple

T = TypeVar('T')
R = TypeVar('R')

Transform = Callable[[T, int], Tuple[T, R]]

main.py:

from typing import Tuple
from lib import Transform


def int_tf(m: int) -> Transform[int, str]:  # Bad number of arguments for type alias, expected: 0, given: 2
    def transform(i: int, pos: int) -> Tuple[int, str]:
        a = (i + pos) % m  # Name 'T' is not defined Name 'R' is not defined
        return (a, 'ok')

    return transform

It works when an alias is defined in the same file

[dmzkrsk]

Looks like T and R are not "bound" to Transform

from lib import T, R solves this issue (but it doesn't look right)
Defining T and R in main.py works too

[ilevkivskyi]

Thanks for reporting this! Indeed, this looks like a bug. I will take a look at this.

[JukkaL]

@ilevkivskyi Are you still working on this?

[ilevkivskyi]

Sorry, last weeks were busy, so I could not finish this. I actually wanted to spend next week less on reviewing PRs and more on fixing old assigned issues. Do you want to work on this one?

[JukkaL]

I'm reviewing github issues and trying keep the information about who's working on what up-to-date. This issue isn't particularly urgent among the high-priority issues.