#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2010 Doug Hellmann.  All rights reserved.
     #
     
     def f(n):
         if n < 0:
             raise ValueError('Invalid n: %s' % n)
         result = []
         j = 0
         for i in range(n):
             j = i * n + j
             j += n
             result.append(j)
         return result
     
     
     if __name__ == '__main__':
         try:
             print f(5)
         finally:
             print 'Always printed'
     
         try:
             print f(-5)
         except:
             print 'There was an error'
         else:
             print 'There was no error'
     
         print 'Last statement'