from typing import Union, List def num_of_positives(obj: Union[int, List]) -> int: """Return the number of positive integers in . Remember, 0 is *not* positive. >>> num_of_positives(17) 1 >>> num_of_positives(-10) 0 >>> num_of_positives([1, -2, [-10, 2, [3], 4, -5], 4]) 5 """ pass def max_nested(obj: Union[int, List]) -> int: """Return the maximum integer stored in nested list . Return 0 if  is an empty list. Precondition: all integers in  are positive. >>> max_nested(17) 17 >>> max_nested([1, 2, [1, 2, [3], 4, 5], 4]) 5 """ pass def maximum_length(obj: Union[int, List]) -> int: """Return the maximum length of any list in nested list . The *maximum length* of a nested list is defined as: 1. 0, if  is a number. 2. The maximum of len(obj) and the lengths of the nested lists contained in , if  is a list. >>> maximum_length(17) 0 >>> maximum_length([1, 2, [1, 2], 4]) 4 >>> maximum_length([1, 2, [1, 2, [3], 4, 5], 4]) 5 """ pass

PLEASE COMPLETE THE FOLLOWING FUNCTIONS ACCORDING TO THEIR DOCTESTS USING PYTHON 3.8