Merged revisions 75322 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r75322 | georg.brandl | 2009-10-10 23:47:31 +0200 (Sa, 10 Okt 2009) | 1 line
Show use of range() step argument nicely.
........
diff --git a/Demo/scripts/beer.py b/Demo/scripts/beer.py
index f050572..8135509 100644
--- a/Demo/scripts/beer.py
+++ b/Demo/scripts/beer.py
@@ -1,14 +1,20 @@
#! /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])
+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):
- print(bottle(n-i), "on the wall,")
- print(bottle(n-i) + ".")
+
+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(n-i-1), "on the wall.")
+ print(bottle(i-1), "on the wall.")