Lezlie Kline wrote: > I'm trying to work out the bugs in a program for calculating the checksum > (modulo 256) of an input string. I'm testing it with my full name and I'm a > beginner with Python. Here's what I have so far. > > def main(): > print"This program creates a checksum for a message." > name=raw_input("Please enter the message to encode: ") > message=name > output=name > for i in range(len(message)): > print"The value of message[i] is ", message[i] > output=output+name+ord(message[i]) > print"The value of the message is ", output > checksum=(output)%256 > print"The checksum is ", checksum > > main()
You're not too far off. Take a good look at everything you do with `output`. In particular, note what type of object it is. Your loop will work but it's not Pythonic - you can iterate over a sequence directly: for i in message: # i = a character (string of length 1) from message print "Processing", i -- Tom Zych / freethin...@pobox.com "Because if they didn't vote for a lizard," said Ford, "the wrong lizard might get in." -- DNA _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor