What is wrong with code? What I have so far.

import csv import sys #The password list - We start with it populated for testing purposes passwords = [["yahoo","XqffoZeo"],["google","CoIushujSetu"]] #The password file name to store the passwords to passwordFileName = "samplePasswordFile"  #The encryption key for the caesar cypher encryptionKey=16 #Caesar Cypher Encryption def passwordEncrypt (unencryptedMessage, key): #We will start with an empty string as our encryptedMessage  encryptedMessage = ''   #For each symbol in the unencryptedMessage we will add an encrypted symbol into the encryptedMessage  for symbol in unencryptedMessage: if symbol.isalpha(): num = ord(symbol) num += key if symbol.isupper(): if num > ord('Z'): num -= 26 elif num < ord('A'): num += 26 elif symbol.islower(): if num > ord('z'): num -= 26 elif num < ord('a'): num += 26 encryptedMessage += chr(num) else: encryptedMessage += symbol return encryptedMessage def loadPasswordFile(fileName): with open(fileName, newline='') as csvfile: passwordreader = csv.reader(csvfile) passwordList = list(passwordreader) return passwordList def savePasswordFile(passwordList, fileName): with open(fileName, 'w+', newline='') as csvfile: passwordwriter = csv.writer(csvfile) passwordwriter.writerows(passwordList) while True: print("What would you like to do:") print(" 1. Open password file") print(" 2. Lookup a password") print(" 3. Add a password") print(" 4. Save password file") print(" 5. Print the encrypted password list (for testing)") print(" 6. Quit program") print("Please enter a number (1-4)") choice = input() if(choice == '1'): #Load the password list from a file  passwords = loadPasswordFile(passwordFileName) if(choice == '2'): #Lookup at password  print("Which website do you want to lookup the password for?") for keyvalue in passwords: print(keyvalue[0]) passwordToLookup = input() for i in range(len(passwords)): if passwordToLookup == passwords[i][1]: unencryptedMessage = passwords[i][1] passwordDecryppt(unencryptedMessage, -16) print(pwd) decryptedPassword=passwordDecrypt(passwordDecrypt) print(decryptedPassword) if(choice == '3'): print("What website is this password for?") website = input() print("What is the password?") unencryptedPassword = input() unencryptedPassword = input() encryptedPassword = passwordEncrypt(unencryptedPassword,encryptionKey) passwords.append([website, encryptedPassword]) print(passwords) if(choice == '4'): #Save the passwords to a file  savePasswordFile(passwords,passwordFileName) if(choice == '5'): #print out the password list  for keyvalue in passwords: print(', '.join(keyvalue)) if(choice == '6'): #quit our program  sys.exit() print() print()