[Tutor] encryption

[Katharine Stoner]

----- Original Message -----
From: Daniel Yoo <dyoo@hkn.eecs.berkeley.edu>
To: Katharine Stoner <kstoner@netins.net>
Cc: python tutor <tutor@python.org>
Sent: Tuesday, May 22, 2001 5:14 PM
Subject: Re: [Tutor] encryption


> On Tue, 22 May 2001, Katharine Stoner wrote:
>
> > I am working on a very simple encryption program.  The program
> > replaces all of the keys on the keyboard to numbers.  The problem is
> > that I cannot get letters to be traded for the numbers very easily.
> > I can't get it to be put in a function so when I make the GUI for
> > encryption and decription.
>
> Thankfully, there's a function called ord() that will do a lot of this
> work for you: it will return the "ordinal" (number) of a character:
>
> ###
> >>> ord('a')
> 97
> >>> ord('b')
> 98
> >>> ord('c')
> 99
> >>> ord('A')
> 65
> >>> ord('B')
> 66
> >>> ord('C')
> 67
> ###
>
> This itself will reallly help reduce the amount of work you'll be doing to
> convert letters to numbers.
>
>
> >  I also need to be able to transform a message into the numbers
> > through a loop in the translation function.  It gives me an error when
> > I try and use the function to change letters to numbers.  It says name
> > is not defined.  If someone would tell me what is wrong with this
> > function.  I need a new aproach. -thanks Cameron
>
> Can you show us how you're using your letters() function?
>
> Good luck to you!
>
>
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