pyramid.py

#!/usr/bin/env python3


import sys

def is_even(n):

    if n % 2 == 0:
        return True
    else:
        return False


def draw_pyramid(size):

    if is_even(size):
        print("Bitte nur ungerade! Du Horst.")
        return

    height = 1

    while (height < size):
        print("=" * height)
        height = height + 1

    while (height > 0):
        print("=" * height)
        height = height - 1

def main(args):

    try:
        height = int(args[0])
        draw_pyramid(height)
    except Exception as e:
        print('Please specify pyramid height')
        print(e)

if __name__ == '__main__':

    args = sys.argv[1:]
    main(args)