Andrew

#!/usr/local/bin/python
from itertools import count
from Tkinter import *       # imports Tkinter lbrary
import sys
import time
class Application(Frame):              # Creates a class so other widgets can be created later
    def __init__(self, master=None):  # Runs on any thing passed to it, if None is passed a new TK Interpter will be started as well as a new window
        Frame.__init__(self, master)   # Subclasses Frame
        self.grid()                    # Frame.grid() a method of displaying widgets like grid but better
        self.createWidgets()           # runs the function createWidgets(self) as a parent of Application
        self.label = Label(self)
        self.label.grid()
        self.alph = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z".split(",")  # Creates a string a-z
        self.ciphertext=""
        self.key=1
        self.message=""
        self.y=0
        self.x=0
        self.l=""
        self.sleep=1
    def createWidgets(self):         # It be a function!
        self.quitButton = Button ( self, text="Quit", command=self.quit ) # Creats a button saying quit that quits the app
        self.quitButton.grid()         # grids it


    def cipherGUI(self):
        global w2
        global w3
        l1= Label ( self, text="Enter a string to shift: ")
        l1.grid()
        w2 = Entry(self)
        w2.grid()
        message = w2.get()
        l1= Label ( self, text="Enter Shift Ammount: ")
        l1.grid()
        w3 = Entry(self)
        w3.grid()
        key = w3.get()
        button = Button ( self, text="Shift It!", command=self.cipherText)
        button.grid()
    def scroll(self):

        a=self.alph[self.x]
        self.label.config(text=self.ciphertext+a)
        if a!=self.l:
            self.x+=1
            self.label.after(75, self.scroll)

    def update_func(self):
        last_letter = 0
        self.l=""

        if self.message[self.y] in self.alph:
            self.l=self.alph[(self.alph.index(self.message[self.y])+self.key)%26]

        else:
            self.l=self.message[self.y]

        self.x=0
        self.y+=1
        if self.y < len(self.message):
            self.ciphertext+=self.l
            self.label.config(text=self.ciphertext)

        if self.y < len(self.message):
            self.scroll()
            self.label.after(100, self.update_func)



    def cipherText(self):
        global ciphertext
        self.key = w3.get()
        self.key = int(self.key)
        self.message = w2.get()
        self.message = str(self.message)
        self.key=self.key%26
        self.ciphertext = ""
        self.label.config(text="")
        self.y=0
        self.update_func()



app = Application()                    # Self explanatory
app.master.title("Testing")  # Frame.master.title is set to sample application
app.cipherGUI()


app.mainloop()  # runs everything