4 posts tagged “python”

I've moved back to Anchorage, Ak! Although it was a while ago (August 16th) and I've been fairly busy since I've been here. Also I don't have an internet connection at the place that I'm staying at so I can only get online at a cafe or at the university. Which means I can't use my pretty desktop very much at this point. I do hope to have a good connection set up in the next MONTH or so haha. We'll see what happens. I started developing again. playing around with python + pygame and really just learning my way around.

Free refills on drip coffee at Kaladi Brothers cafe = Happiness!!!! makes me staying here for hours on end just that much more enjoyable! haha.

Loving school so far. Only about a week in of course, but my professors are all pretty cool. Classes seem like they're going to be fun this semester. But the homework is going to be a pain in the ass! LOTS AND LOTS of homework. Not that I mind... its just going to mean holding off on the gaming and programming fun!

I got back into world of warcraft AGAIN! Started an Undead Warlock on the Korgath server. I honestly couldn't help it! My love for Richard in Looking For Group (lfgcomic.com) is just too much! He has to be the BEST evil character ever! haha.

But yeah! Back to aimlessly browsing the tubes that we know as the Internet.

I'll post up some screenshots of whatever half assed game I end up creating and mostlikely the source code as well! Sometimes soon :)

A couple of screenshots of my desktop and programming environment. Fairly simple.

Rewritten to make it more modular, basically works the same way as before.

import sys

alphabet = 'abcdefghijklmnopqrstuvwxyz'
balphabet = 'zyxwvutsrqponmlkjihgfedcba'

class LetterBack:
    '''Class for Encrypting a string of letters'''
   
    def __init__(self, text='mnm'):
        self.text = text
       
    def encrypt(self, aSentance):
        '''Encrypts a given string by replacing each letter
        with the letter before it in the alphabet.'''
        output = ''
        for element in aSentance:
            for i in range(26):
                if element == alphabet[i]:
                    output += alphabet[i-1]
        print output

    def decrypt(self, aSentance):
        '''Decrypts a given string encoded by the encrypt
         function.'''
        output = ''
        for element in aSentance:
            #print element + ' this is 1'
            for i in range(26):
                if element == balphabet[i]:
                    output += balphabet[i-1]
        print output

def main():
    lb = LetterBack()
    if sys.argv[1] == '-e':
        lb.encrypt(sys.argv[2])
    elif sys.argv[1] == '-d':
        lb.decrypt(sys.argv[2])

if __name__ == '__main__':
    main()

use:
python letterback.py -e 'alvin'
returns: zkuhm
python letterback.py -d 'zkuhm'
returns: alvin

or in the python interpreter:
>>> from letterback import LetterBack
>>> lb = LetterBack()
>>>lb.encrypt('alvin')
zkuhm
>>> lb.decrypt('zkuhm')
alvin

enjoy :)

I scripted this up really quick last night while my girlfriend and I were having fun sending cryptic messages to each other. Basically all it does is encode or decode a string of letters given as CLI arguments. The program takes a given string and prints out in place of each letter a letter before that letter in the alphabet. For example: a = z, b = a, and so on....

Here is a code:


#! /usr/bin/python
#
# Author: Alvin D. Morris
# Date: August 5, 2008
#
# Program for encrypting a string of text.

import sys

alphabet = 'abcdefghijklmnopqrstuvwxyz'
balphabet = 'zyxwvutsrqponmlkjihgfedcba'

def encrypt(aSentance):
    '''Encrypts a given string by replacing each letter with the letter before it in the alphabet.'''
    output = ''
    for element in aSentance:
        for i in range(26):
            if element == alphabet[i]:
                output += alphabet[i-1]
    print output

def decrypt(aSentance):
    '''Decrypts a given string encoded by the encrypt function.'''
    output = ''
    for element in aSentance:
        #print element + ' this is 1'
        for i in range(26):
            if element == balphabet[i]:
                output = output + balphabet[i-1]
    print output

def main():
    if sys.argv[1] == '-e':
        encrypt(sys.argv[2])
    elif sys.argv[1] == '-d':
        decrypt(sys.argv[2])

if __name__ == '__main__':
    main()


Usage:
python back.py -e alvin
returns:  zkuhm
python back.py -d zkuhm
returns: alvin