write a python function that calculates the sum of factorials. ask the user for a positive number or 0. ask the user to re-enter if the use enters a negative number.

1. Write a Python function that calculates the sum of factorials. Ask the user for a positive number or 0. Ask the user to re-enter if the user enters a negative number. (20 pts) N SUM=n!= 0! + 11 + 2 + 3! + ... + N! Test case: input = 3, display 10