Error in following code

[zaperaj at gmail.com]

Im working with python2.2 on red hat linux.
The following program is supposed to print decreasing numbers from an
entered number till 1, each decrement being = 1 :

#! usr/bin/env/python

def f(n=int(raw_input("enter number: "))):
     print 'n=',n
     if n>1:
             return n*f(n-1)
     else:
             print 'end'
	     return 1




Though it works fine on the python interpretor, i dont get the
required output when i write this code in gedit (text editor). The
output that i get is (where t4.py is the name of the file):

[root at localhost root]# python t4.py
enter number: 6
[root at localhost root]#

i.e it takes the input but doesn't print anything. If anybody can
help... Thanx!