# L-28 MCS 260 Wed 31 Oct 2007 : readfilename2.py
#
# Prompts the user for a file name and displays
# an error message if the name given by the user
# does not correspond to a file.  Asks to retry.

while True:
   name = raw_input('Give the name of a file : ')
   try:
      file = open(name,'r')
      print 'opened ' + name + ' for reading'
      file.close()
      break    
   except IOError:
      print 'file ' + name + ' does not exist?'
      retry = raw_input('Try again ? (y/n) ')
      if retry != 'y': break