(encode/decode sections) Hello, I am having troubles actually taking the letter i found in the key or the alpha and making it the new plain for the main functions. Every time when I try to run the program it just says must be str not int. Which does make any sense because the string is a str. Any thoughts?
""" crypto.py
Implements a simple substitution cypher
"""
alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
key = "XPMGTDHLYONZBWEARKJUFSCIQV"
def menu():
print(' Secret Decoder Menu')
print()
print(' 0)' 'Quit')
print(' 1)' 'Encode')
print(' 2)' 'Decode')
print()
response = input('What would you like to do? ')
return response
# when the user tpyes a number it sends the answer beck to the main function where it can be used in the while loop
def encode(plain):
new_word = " "
for letter in plain.upper():
if letter in alpha:
letter.find(key)
keyLetter = letter.find(key)
plain = new_word + keyLetter
return plain
def decode(coded):
new_word = " "
for letter in coded.upper():
if letter in key:
letter.find(alpha)
keyLetter = letter.find(alpha)
coded = new_word + keyLetter
return plain
def main():
keepGoing = True
while keepGoing:
response = menu()
if response == "1":
plain = input("text to be encoded: ")
print(encode(plain))
print()
elif response == "2":
coded = input("code to be decyphered: ")
print (decode(coded))
print()
elif response == "0":
print ("Thanks for doing secret spy stuff with me.")
keepGoing = False
else:
print ("I don't know what you want to do...")
main()