ceaser cypher

by avgprogramerjoe on Aug 16th, 2007

This code takes a string a cyphers it by shifting it's position in the alphabet. I've gotten it so it can pretty much take paragraphs. It's quite neat to play with.
For example the above when shifted to 5, would be:
Ymnx htij yfpjx f xywnsl f hDumjwx ny gD xmnkynsl ny,x utxnynts ns ymj fqumfgjy= N,Aj ltyyjs ny xt ny hfs uwjyyD rzhm yfpj ufwflwfumx= Ny,x vznyj sjfy yt uqfD Bnym=

Python Code Snippet (Toggle Plain Text)

import string
numbers = ""
x = 0
while x < 11:
    numbers = numbers + str(x)
    x += 1
shift = int(raw_input("Pick shift key from 1-9"))
choice = raw_input("would you like to encode or decode?")
letters = string.ascii_letters + string.punctuation + numbers
word = (raw_input("Please enter text"))
print letters
encoded = ''
if choice == "encode":
    for letter in word:
        if letter == ' ':
            encoded = encoded + ' '
        else:
            x = letters.index(letter) + shift
            encoded = encoded + letters[x]
if choice == "decode":
    for letter in word:
        if letter == ' ':
            encoded = encoded + ' '
        else:
            x = letters.index(letter) - shift
            encoded = encoded + letters[x]
print encoded

Comments on this Code Snippet

Permalink

Aug 16th, 2007

Re: ceaser cypher

Removed [ code][ inlinecode] ... [ /inlinecode][ /code] tags.

Note, you could use
letters = string.ascii_letters + string.punctuation + string.digits

vegaseat

DaniWeb's Hypocrite