| #!/usr/bin/env python3 |
| |
| """ |
| A Python version of the classic "bottles of beer on the wall" programming |
| example. |
| |
| By Guido van Rossum, 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.") |
