🔒 can i type hint that an arg is Callable and returns int?

[grizzled wasp]

can i type hint that an arg is Callable and returns int?

[pliant crescent]

@grizzled wasp

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[stark burrow]

yep

[azure thistle]

Yes, why not?

[grizzled wasp]

how

[sage kernel]

: Callable) -> int:

[azure thistle]

def function ( arg: callable) -> int:

Capital C , yes.

[sage kernel]

copycat

[grizzled wasp]

no i dont want to hint that i return int i want to say that my arg should be a Callable witch returns an int

[stark burrow]

from typing import Callable


def re_callback(int_func: Callable[[int], int], x: int) -> int:
    return int_func(x)

def print_int(x: int) -> int:
    print(x)
    return x

def add_one(x: int) -> int:
    return x + 1

print(re_callback(print_int, 1))
print(re_callback(add_one, 1))```

just an example

[grizzled wasp]

thx

how do i say that it shouldnt have args itself?

[azure thistle]

Then it would just be Callable

[stark burrow]

^

[grizzled wasp]

got it just leave the [] empty

[torn heart]

Callable[[], object] denotes a callable that accepts zero arguments (hence the empty list) and returns an object

[grizzled wasp]

got it thx

!solved

[pliant crescent]

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