fibonnacci.py

import os

def fibonnacci(num):
    """
    Takes a number num and returns the num'th fibonnacci number.
    """
    if num == 2 or num == 1:
        return 1
    else:
        fib = fibonnacci(num-1) + fibonnacci(num-2)
        return fib


for i in range(1, 21):
    print(fibonnacci(i))