#! /usr/bin/env python # By GvR, demystified after a version by Fredrik Lundh. import sys n = 100 if sys.argv[1:]: n = int(sys.argv[1]) def bottle(n): if n == 0: return "no more bottles of beer" if n == 1: return "one bottle of beer" return str(n) + " bottles of beer" for i in range(n, 0, -1): print bottle(i), "on the wall," print bottle(i) + "." print "Take one down, pass it around," print bottle(i-1), "on the wall."