["python","mypy","python-typing"]
How can I specify the function type in my type hints?

How can I specify the type hint of a variable as a function type? There is no typing.Function, and I could not find anything in the relevant PEP, PEP 483.
As @jonrsharpe noted in a comment, this can be done with collections.abc.Callable: from collections.abc import Callable def my_function(func: Callable): Note: Callable on its own is equivalent to Callable[..., Any]. Such a Callable takes any number and type of arguments (...) and returns a value of any type (Any). If this is too unconstrained, one may also specify the types of the input argument list and return type. For example, given: def sum(a: int, b: int) -> int: return a+b The corresponding annotation is: Callable[[int, int], int] That is, the parameters are sub-scripted in the outer subscription with the return type as the second element in the outer subscription. In general: Callable[[ParamType1, ParamType2, ..., ParamTypeN], ReturnType]