Project Euler #20: Factorial digit sum.py

import time

start_time = time.time()


def factorial(n):
    if n == 1:
        return 1
    return n*factorial(n-1)


def solution(n):
    return sum(map(int, str(factorial(n))))


print(solution(100))
print("--- %s seconds ---" % (time.time() - start_time))