"""
 1.三級菜單 注冊 登陸 注銷
 2.進入每一個一級菜單，都會有下一級的菜單
"""
user_item = dict()
try:
  while True:
    print('-------Welcome sir-------')
    input_choice = int(input('Please enter your choice:1:Registration 2:login 3:logout:'))
    # 用戶輸入自己的選擇，會進入到相關的二級菜單
    if input_choice == 1:
      # if input_choice==1 進入注冊
      user = input('Please enter your account number:')
      pwd = input('please enter your password:')
      # 保存用戶注冊的賬號
      user_item['user'] = user
      user_item['pwd'] = pwd
      # 提示用戶注冊成功
      print('您的賬號已生效，下次請用該賬號:{}登陸本系統'.format(user))
    # if input_choice==2 進入登陸
    elif input_choice == 2:
      login_user = input('Please enter your login account number:')
      login_pwd = input('please enter your login password:')
      # 對用戶輸入的賬號和密碼進行確認
      if login_user == user_item['user'] and login_pwd == user_item['pwd']:
        print('Welcome sir:{}'.format(login_user))
      else:
        print('Sorry, your account or password is incorrect. Please confirm and come back')
    # if input_choice == 3 進入注銷
    elif input_choice == 3:
      logout_input = input('Do you really want to quit this system?,y or n')
      if logout_input == 'y':
        break
      elif logout_input == 'n':
        input_choice = int(input('Please enter your choice:1:Registration 2:login 3:logout:'))
      else:
        print('Your input is incorrect')
except Exception as re:
  print(re)
finally:
  print('')