# L-37 MCS 275 Wed 14 Apr 2010 : randomwords.py

# Auxiliary module for "conversation.py"

import random

def RandomWord(n):
   """
   Returns a random word of n 
   lower case letters.
   """
   s = ''
   for i in range(0,n):
      r = random.randint(ord('a'),ord('z'))
      s = s + chr(r)
   return s

def RandomSentence(n,m):
   """
   Returns a random sentence of n
   random words, separated by spaces.
   Every word is between 1 and  m
   characters long.
   """
   s = ''
   for i in range(0,n):
      L = random.randint(1,m)
      w = RandomWord(L)
      if s == '':
         s = w
      else:
         s = s + ' ' + w
   return s

def main():
   """
   Test on random words.
   """
   n = input('give n : ')
   m = input('give m : ')
   w = RandomSentence(n,m)
   print 'random words :', w

if __name__=="__main__": main()