python银行管理系统代码

好的，下面是一个 Python 银行管理系统的示例代码，包括一个 `BankAccount` 类和一个 `Bank` 类：

class BankAccount:
    def __init__(self, account_number, name, balance=0.0):
        self.account_number = account_number
        self.name = name
        self.balance = balance

    def deposit(self, amount):
        self.balance += amount
        print("Deposit successful. New balance is:", self.balance)

    def withdraw(self, amount):
        if self.balance < amount:
            print("Withdrawal unsuccessful. Insufficient balance.")
        else:
            self.balance -= amount
            print("Withdrawal successful. New balance is:", self.balance)

    def check_balance(self):
        print("Your current balance is:", self.balance)


class Bank:
    def __init__(self, name):
        self.name = name
        self.accounts = {}

    def add_account(self, account_number, name, balance=0.0):
        if account_number in self.accounts:
            print("Account already exists.")
        else:
            self.accounts[account_number] = BankAccount(account_number, name, balance)
            print("Account created successfully.")

    def remove_account(self, account_number):
        if account_number in self.accounts:
            del self.accounts[account_number]
            print("Account removed successfully.")
        else:
            print("Account not found.")

    def deposit(self, account_number, amount):
        if account_number in self.accounts:
            self.accounts[account_number].deposit(amount)
        else:
            print("Account not found.")

    def withdraw(self, account_number, amount):
        if account_number in self.accounts:
            self.accounts[account_number].withdraw(amount)
        else:
            print("Account not found.")

    def check_balance(self, account_number):
        if account_number in self.accounts:
            self.accounts[account_number].check_balance()
        else:
            print("Account not found.")


def main():
    bank = Bank("Python Bank")

    while True:
        print("1. Create account")
        print("2. Remove account")
        print("3. Deposit")
        print("4. Withdraw")
        print("5. Check balance")
        print("6. Quit")

        choice = int(input("Enter your choice: "))

        if choice == 1:
            account_number = input("Enter account number: ")
            name = input("Enter name: ")
            balance = float(input("Enter initial balance (optional): ") or 0)
            bank.add_account(account_number, name, balance)
        elif choice == 2:
            account_number = input("Enter account number: ")
            bank.remove_account(account_number)
        elif choice == 3:
            account_number = input("Enter account number: ")
            amount = float(input("Enter amount to deposit: "))
            bank.deposit(account_number, amount)
        elif choice == 4:
            account_number = input("Enter account number: ")
            amount = float(input("Enter amount to withdraw: "))
            bank.withdraw(account_number, amount)
        elif choice == 5:
            account_number = input("Enter account number: ")
            bank.check_balance(account_number)
        elif choice == 6:
            print("Thank you for banking with us!")
            break
        else:
            print("Invalid choice. Please try again.")


if __name__ == '__main__':
    main()

此代码定义了一个 `Bank` 类和一个 `BankAccount` 类，用于管理银行账户。在 `main()` 函数中，用户可以执行以下操作：

1. 创建账户
2. 删除账户
3. 存款
4. 取款
5. 查询余额
6. 退出程序

用户选择要执行的操作后，程序将相应地调用 `Bank` 类中的方法。

以上是一个 Python 银行管理系统的示例代码，可以根据自己的需要进行修改和扩展。