Python doesn't have 'first' function. Here is an example of implementation of it.

first.py

from typing import Callable, Iterable, Any

def first(predicate: Callable, collection: Iterable) -> Any:
    for x in collection:
        if predicate(x): 
            return x
        
def first(predicate: Callable, collection: Iterable) -> Any:
    return next((x for x in collection if predicate(x)), None)