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Importing generic type aliases #2887
Description
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 transformIt works when an alias is defined in the same file
Activity
dmzkrsk commentedon Feb 21, 2017
Looks like
TandRare not "bound" toTransformfrom lib import T, Rsolves this issue (but it doesn't look right)Defining
TandRinmain.pyworks tooilevkivskyi commentedon Feb 21, 2017
Thanks for reporting this! Indeed, this looks like a bug. I will take a look at this.
JukkaL commentedon May 31, 2017
@ilevkivskyi Are you still working on this?
ilevkivskyi commentedon May 31, 2017
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 commentedon May 31, 2017
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.
Simplify and tighten type aliases (#3524)