Type hinting generator in python 3.6
You need to import the typing module. As per docs:
The return type of generator functions can be annotated by the generic type
Generator[yield_type, send_type, return_type]provided bytyping.pymodule
Try this way instead:
from typing import Generatordef generate() -> Generator[int, None, None]: for i in range(10): yield iThe above will have the desired result:
l = [i for i in generate()]Output:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
As pointed out in the comments, you might not use the last version of PyCharm. Try switching to version 2016.3.2 and you might be fine. Unfortunately this is a well-known bug, as per @AshwiniChaudhary comment.
More, the reported issue (for the last version of PyCharm) was submitted on December, last year. They probably fixed it and pushed the modifications into the same version.