def menu():
  menuchoice = input('''
  1. Register
  2. Login
  3. logout
  >>> ''')

  if menuchoice == '1':
    register()
  elif menuchoice == '2':
    login()

def register():
  name = input('Enter name: ')
  age = input('Enter age: ')
  favpizza = input('What is your fav pizza?: ')


  letter1 = name [0:3]
  username = letter1 + age
  userFile.write(username + ',')


  userFile = open(username , 'a')
  userFile.write(name + ',')
  userFile.write(age + ',')
  userFile.write(favpizza + ',')



  password = input('Enter password: ')
  password1 = input('Enter password again: ')

  if password != password1:
    print('ERROR AHHHHHH')
  else:
    userFile.write(password + ',')
    print('password accepted! ')


def login():

  userFile = open('userdetails.txt' , 'r')
  username = input('Enter username: ')
  password = input('Enter password: ')

  filePull = userFile.read().split(',')

  if username in filePull and password in filePull:
    print('YOUR IN! GET IN!')
  else:
    print(' YOU are SHAMEFUL><<><><><><><><><><>')


menu()