Programming challenges

[popcorn]

postfix is done, and I've just got a bit of array juggling to do for 2. These high school probs are just about the right level for me. Who knows one day I may even be l33t. ;D

2001, factorial.

#!/usr/bin/env python

import sys

def fact(n):
 total = 1
 for i in xrange(1, n+1):
  total *= i

 return total


if __name__ == '__main__':
 if len(sys.argv) < 2:
  print "Usage: %s <Integer>" % sys.argv[0]
  sys.exit(1)

 try:
  target = abs(int(sys.argv[1]))
 except:
  print "Illegal number"
  sys.exit(1)
 

 print fact(target)