Comments on: Encrypt message using Python

By: None

None — Mon, 08 Nov 2010 14:01:40 +0000

shift = lambda txt,sft=1:''.join([[ch,chr((ord(ch) - ord(['A','a'][ch.islower()]) + sft)%26+ord(['A','a'][ch.islower()]))][ch.isalpha()] for ch in txt])

By: Martin Hvidberg

Martin Hvidberg — Sun, 17 Jan 2010 15:32:54 +0000

# This version handles upper- lowercase individually, and therefore correct

from string import maketrans, translate, ascii_lowercase as al, ascii_uppercase as au

def caesar(text, offset):
strCClow = translate(text, maketrans(al, al[offset:] + al[:offset]))
strCCupr = translate(strCClow, maketrans(au, au[offset:] + au[:offset]))
return strCCupr

By: fire

fire — Fri, 28 Aug 2009 19:46:23 +0000

you can get this a little bit easier: ;]

from string import maketrans, translate, ascii_letters as al

def caesar(text, offset):
return translate(text, maketrans(al, al[offset:] + al[:offset]))

print caesar(caesar(‘foobar’, 2), -2) == ‘foobar’

hth