Python 3 Documentation - Function Annotation

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I use the following format to document my Python code:

def my_function(param: str) -> dict:
   some code

I can't figure out how to document a function passed to another function.

For example:

def my_function(my_other_function: ???) -> dict:
    some code

How do I make a function annotation?

documentation python
1 Answers

First Thoughts: "Everything in python is an object"

I couldn't find anything in the docs, but as everything in python is an object i would shoot for object.

def my_function(my_other_function: object) -> dict:
    some code

To proof it:

if isinstance(my_function, my_function, object):
    print("yes")
    >yes

Anyhow, this might not be too explicit, therefore:

Seconds thoughts: Using proper type hints

Based on what COLDSPEED commented, a more explicit type hint would be using typing

import typing
def my_function(my_other_function:typing.Callable):->dict:
    pass

"The only way that annotations take on meaning is when they are interpreted by third-party libraries". Which means, for your source-code itself, it doesn't change anything. Just wanted to mention it.

user_17677540
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