Home | History | Annotate | Download | only in demo 
      1 #!/usr/bin/env python3
      2 
      3 """
      4 A Python version of the classic "bottles of beer on the wall" programming
      5 example.
      6 
      7 By Guido van Rossum, demystified after a version by Fredrik Lundh.
      8 """
      9 
     10 import sys
     11 
     12 n = 100
     13 if sys.argv[1:]:
     14     n = int(sys.argv[1])
     15 
     16 def bottle(n):
     17     if n == 0: return "no more bottles of beer"
     18     if n == 1: return "one bottle of beer"
     19     return str(n) + " bottles of beer"
     20 
     21 for i in range(n, 0, -1):
     22     print(bottle(i), "on the wall,")
     23     print(bottle(i) + ".")
     24     print("Take one down, pass it around,")
     25     print(bottle(i-1), "on the wall.")
     26