[Tutor] encryption

[Daniel Coughlin]

First off i think using a dictionary would help you enormously:

dict = {'a':'1','b':'2' ... }

then your function could look something like this:

def letters(ltter):
	dict = {'a':'1','b':'2' ... }
	print dict[ltter]

then you could do your translation like this:

>c = 'aaabbb'
>for letter in c:
>	letters(letter)
1
1
1
2
2
2

or put the values where ever you need to. I think using a dictionary would be a
lot faster than using if statements.

On Tue, 22 May 2001, Katharine Stoner wrote:

> Hi to all python people,
>
> 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.  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
>
> Here is what I have so far:
>
> def letters(ltter):
>     if ltter == ' ':
>         print '~'
>     if ltter == '':
>         print '`'
>     if ltter == 'A':
>         print '1'
>     if ltter == 'B':
>         print '2'
>     if ltter == 'C':
>         print '3'
>     if ltter == 'D':
>         print '4'
>     if ltter == 'E':
>         print '5'
>     if ltter == 'F':
>         print '6'
>     if ltter == 'G':
>         print '7'
>     if ltter == 'H':
>         print '8'
>     if ltter == 'I':
>         print '9'
>     if ltter == 'J':
>         print '10'
>     if ltter == 'K':
>         print '11'
>     if ltter == 'L':
>         print '12'
>     if ltter == 'M':
>         print '13'
>     if ltter == 'N':
>         print '14'
>     if ltter == 'O':
>         print '15'
>     if ltter == 'P':
>         print '16'
>     if ltter == 'Q':
>         print '17'
>     if ltter == 'R':
>         print '18'
>     if ltter == 'S':
>         print '19'
>     if ltter == 'T':
>         print '20'
>     if ltter == 'U':
>         print '21'
>     if ltter == 'V':
>         print '22'
>     if ltter == 'W':
>         print '23'
>     if ltter == 'X':
>         print '24'
>     if ltter == 'Y':
>         print '25'
>     if ltter == 'Z':
>         print '26'
>
>
>