Я получаю NameError: name 'fooAlpha' is not defined, когда запускаю свой скрипт. Из исследований я считаю, что это потому, что я не объявил fooAlpha в начале сценария. Однако даже если поместить строку fooAlpha = "" в строке 22, я все равно получаю сообщение об ошибке. Я чувствую, что мне не хватает только небольшого понимания python, чтобы преодолеть эту ошибку. Пожалуйста, могу ли я получить некоторые советы о том, как решить эту проблему.
# CAESAR CIPHER - PART 6
# Add a GUI
# - by JeffGames
#
#
#
# ToDo:
# 1. Add JeffGames icon
# 2. Handle spaces in the string
# Import tkinter, our GUI framework
from tkinter import * # Import tkinter, our GUI framework
root = Tk()
# Variables used by the main program.
alphabet01 = 'GjlZCMaQKU"/-Xf$£\\mrw:>H(%Fo&tD<!gJLzbiSxBcT,dqPYy=*OA~_?^.)E;evN+R#k\'@hnIuVWsp'
alphabet02 = 'hkS*F>ucL/l-)VPB£iR\\ZUdI\'CQ$z(@?=f<ta:m#Wvp;~n!Yg."^sxMHNKDwybjr_,O%oq+TJGXAEe&'
alphabet03 = '(OIce$TnM=JvF?j<&X+S>i\\h"EY\'dK£,lq!Z@~QmbyD-wUWNsrV^H:fB.aPpkL_otC/);RzAGxg%*#u'
# Define what happens when the go button is clicked
def clickAlpha():
print("Alphabet from clickAlpha = ", algo.get()) # Calls algo and prints its value
myAlpha = algo.get()
print("myAlpha = ", myAlpha) # debug printing
if myAlpha == "Alpha1":
print(alphabet01) # debug printing
fooAlpha = alphabet01
elif myAlpha == "Alpha2":
print(alphabet02) # debug printing
fooAlpha = alphabet02
else:
print(alphabet03) # debug printing
fooAlpha = alphabet03
def clickEncrypt():
msgEncrypt = msgInput.get()
msgEncrypt = str(msgEncrypt)
#print(msgEncrypt) # Used for debugging
caesarShift = cesar.get()
caesarShift = int(caesarShift)
useAlpha = fooAlpha
useAlpha = str(useAlpha)
print(useAlpha) # Used for debugging
newMessage = ""
for character in msgEncrypt:
if character in useAlpha:
position = useAlpha.find(character)
# NB: len(alphabet) handles a list of any length
newPosition = (position + caesarShift)%len(useAlpha)
newCharacter = useAlpha[newPosition]
newMessage += newCharacter
#Put the new message into the message output field
msgOutput.delete(0, END) # Clear the output field after GO is clicked
# Ans = str(newMessage) # Read message for putting into the output field
msgOutput.insert(0, newMessage) #(0, Ans) # Put the message from input field into
def clickDecrypt():
print("Decrypt pressed")
msgEncrypt = msgInput.get()
msgEncrypt = str(msgEncrypt)
#print(msgEncrypt) # Used for debugging
caesarShift = cesar.get()
caesarShift = int(caesarShift)
useAlpha = fooAlpha # Hard coding the algo
useAlpha = str(useAlpha)
print(useAlpha) # Used for debugging
newMessage = ""
for character in msgEncrypt:
if character in useAlpha:
position = useAlpha.find(character)
# NB: len(alphabet) handles a list of any length
newPosition = (position - caesarShift)%len(useAlpha)
newCharacter = useAlpha[newPosition]
newMessage += newCharacter
#Put the new message into the message output field
msgOutput.delete(0, END) # Clear the output field after GO is clicked
# Ans = str(newMessage) # Read message for putting into the output field
msgOutput.insert(0, newMessage) #(0, Ans) # Put the message from input field into
def moveCaesar(sld): # A variable must be in here for the function to work
print("Shift = ", cesar.get()) # Calls cesar variable and prints its value
def clickClear():
msgInput.delete(0, END)
msgOutput.delete(0, END)
print("Cleared all messages")
def clickCopy():
return # Will eventually copy the decrypted or encrypted text to clipboard
def clickQuit(): # Created to have a pop-up to confirm quit.
btnExit(command=root.quit)
# Set up for the Alphabet being used. Alphabet 1 is default
algo = StringVar()
algo.set("Alpha1") # Sets Alphabet 1 as default
print("Initial alphabet: ", algo.get()) # Calls algo.set and prints its value
# Set up for the Casar shift. 0 is the default
cesar = IntVar()
cesar.set(1)
print("Initial shift: ", cesar.get()) # Calls cesar variable and prints its value
# SET UP THE CANVAS
root.title("Caesar Cipher by JeffGames")
# ---------------------------------------------------
# SET UP THE BUTTONS, Message boxes, and input areas
# ---------------------------------------------------
# Welcome message
welcFrame = LabelFrame(root, padx=10, pady=10, bg='blue')
lblWelcome = Label(welcFrame, text="Welcome to the Caesar Cipher program", bg='blue', fg='white')
# Input message box with a heading instructing user to paste or type message
lblMsgIn = Label(root, text="STEP 1 - Type or paste your message in the box below.")
msgInput = Entry(root)
# Alphabet choices
alphaFrame = LabelFrame(root, padx=10, pady=10, bg='green')
lblAlphaChoice = Label(alphaFrame, text=" STEP 2 - Now choose your encryption algo")
btnAlpha1 = Radiobutton(alphaFrame, text="Alphabet 1", variable=algo, value="Alpha1", command=clickAlpha)
btnAlpha2 = Radiobutton(alphaFrame, text="Alphabet 2", variable=algo, value="Alpha2",command=clickAlpha)
btnAlpha3 = Radiobutton(alphaFrame, text="Alphabet 3", variable=algo, value="Alpha3",command=clickAlpha)
# Caesar shift slider
caesarFrame = LabelFrame(root, padx=10, pady=10, bg='red')
lblCaesar = Label(caesarFrame, text=" STEP 3 - Now set your Caesar Shift")
sldrCaesar = Scale(caesarFrame, from_=0, to=80, variable=cesar, orient=HORIZONTAL, command=moveCaesar)
# Encrypt / Decrypt user choices
cryptFrame = LabelFrame(root, padx=10, pady=10, bg='pink')
lblCryptMsg = Label(cryptFrame, text="STEP 1 - Press a button to Encrypt or Decrypt a message", padx=5, pady=5)
btnCrypt1 = Button(cryptFrame, text="Encrypt", command=clickEncrypt)
btnCrypt2 = Button(cryptFrame, text="Decrypt", command=clickDecrypt)
#Output box
msgOutput = Entry(root)
# Clear, Copy to clipboard, and Exit buttons
btnClear = Button(root, text="Clear All", command=clickClear)
btnCopy = Button(root, text="Copy to clipboard", command=clickCopy)
btnExit = Button(root, text="Quit", command=root.quit)
# -----------------------------
# PUT THE BUTTONS ON THE SCREEN
# -----------------------------
# ROW 0 - Welcome message
welcFrame.grid(row=0, columnspan=3, sticky=W+E)
lblWelcome.grid(row=0, column=0, columnspan=3)
# ROW 1 & 2 - User's Message input heading and area
lblMsgIn.grid(row=1, column=0, columnspan=3)
msgInput.grid(row=2, column=0, columnspan=3, sticky=W+E)
# ROW 3 & 4 - Choose Alphabet button and message placement
alphaFrame.grid(row=3, columnspan=3, sticky=W+E)
lblAlphaChoice.grid(row=3, column=0, columnspan=3, sticky=W)
btnAlpha1.grid(row=4, column=0)
btnAlpha2.grid(row=4, column=1)
btnAlpha3.grid(row=4, column=2)
# ROW 5 & 6 Caesar shift slider
caesarFrame.grid(row=5, columnspan=3, sticky=W+E)
lblCaesar.grid(row=5, column=0, columnspan=3, sticky=W)
sldrCaesar.grid(row=6, column=0, columnspan=3, sticky=W+E)
# ROW 7 & 8 - Encrypt Decrypt button and message placement
cryptFrame.grid(row=7, columnspan=3, sticky=W+E)
lblCryptMsg.grid(row=7, column=0, columnspan=3, sticky=W)
btnCrypt1.grid(row= 8, column=0)
btnCrypt2.grid(row= 8, column=1)
# ROW 0 - User's Message ouput heading and area
msgOutput.grid(row=9, column=0, columnspan=3, sticky=W+E)
# ROW 10 - Clear Messages & Copy to clipboard, Exit program button placement
btnClear.grid(row=10, column=0)
btnCopy.grid(row=10, column=1)
btnExit.grid(row=10, column=2)
# tkinter mainloop
root.mainloop()