ユーザーがデータベースリストに存在するかどうかを確認する方法

Question

何時間もしても、データに名前とパスワードのユーザー入力が存在するかどうかを確認する方法がまだわかりません。たとえば、私がPlease input customer name:と尋ねると、Please input customer password:よりも尋ねるよりもSamが入力され、入力はjanosです。customer_menu()関数を呼びたいと思っています。おかげ

customers_list = [] 

class BankSystem(object): 
    def __init__(self): 
     self.customers_list = [] 
     self.load_bank_data() 
    def load_bank_data(self): 
     customer_1 = Customer("Sam", "janos", ["14", "Wilcot Street", "Bath", "B5 5RT"]) 
     account_no = 1234 
     account_1 = Account(5000.00, account_no) 
     customer_1.open_account(account_1) 
     self.customers_list.append(customer_1) 
    def customer_login(self, name, password): 
     if name in customers_list and password in customers_list: 
      self.name = name 
      self.password = password 
      self.customer_menu() 
     else: 
      print("sorry %s, it doesn't look like you are a customer"%name) 
      exit() 


    def main_menu(self): 
     print ("1) Customer login") 
     print (" ") 
     option = int(input ("Choose your option: ")) 
     return option 

    def run_main_option(self): 
     loop = 1   
     while loop == 1: 
      choice = self.main_menu() 
      if choice == 1: 
       name = input ("\nPlease input customer name: ") 
       password = input ("\nPlease input customer password: ") 
       msg = self.customer_login(name, password) 
       print(msg) 

person.py

class Person(object): 

    def __init__(self, name, password, address = [None, None, None, None]): 
     self.name = name 
     self.password = password 
     self.address = address 

    def get_address(self): 
     return self.address 

    def update_name(self, name): 
     self.name = name 

    def get_name(self): 
     return self.name 

    def print_details(self): 
     print("Name %s:" %self.name) 
     print("Address: %s" %self.address[0]) 
     print("   %s" %self.address[1]) 
     print("   %s" %self.address[2]) 
     print("   %s" %self.address[3]) 
     print(" ") 


    def check_password(self, password): 
     if self.password == password: 
      return True 
     return False 

    def profile_settings_menu(self): 
     #print the options you have 
     print (" ") 
     print ("Your Profile Settings Options Are:") 
     print ("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~") 
     print ("1) Update name") 
     print ("2) Print details") 
     print ("3) Back") 
     print (" ") 
     option = int(input ("Choose your option: ")) 
     return option 


    def run_profile_options(self): 
     loop = 1   
     while loop == 1: 
      choice = self.profile_settings_menu() 
      if choice == 1: 
       name=input("\n Please enter new name\n: ") 
       self.update_name(name) 
      elif choice == 2: 
       self.print_details() 
      elif choice == 3: 
       loop = 0      

customer.py

from person import Person 

class Customer(Person): 

    def __init__(self, name, password, address = [None, None, None, None]): 
     super().__init__(name, password, address) 

    def open_account(self, account): 
     self.account = account 

    def get_account(self): 
     return self.account 

    def print_details(self): 
     super().print_details() 
     bal = self.account.get_balance() 
     print('Account balance: %.2f' %bal) 
     print(" ") 

Answer 1

 for customer in customers_list: 
     if customer.name == name: 
      if customer.password == password: 
       ...