定义一个银行账户类

class Account: # 初始化方法，传入账户名和余额（默认为0），并设置账户状态为正常 def init(self, name, balance=0): self.name = name self.balance = balance self.status = 'normal'

# 存款方法，传入存款金额，将余额增加相应的金额
def deposit(self, amount):
    self.balance += amount

# 取款方法，传入取款金额，如果余额不足则提示余额不足，否则将余额减少相应的金额
def withdraw(self, amount):
    if self.balance < amount:
        print('Insufficient balance')
    else:
        self.balance -= amount

# 查询余额方法，输出当前余额
def query_balance(self):
    print('Your balance is', self.balance)

# 挂失方法，将账户状态设置为挂失
def lose_card(self):
    self.status = 'lost'

# 找回卡片方法，将账户状态设置为正常
def find_card(self):
    self.status = 'normal'

# 关闭账户方法，将账户状态设置为关闭，并从账户字典中删除该账户
def close_account(self):
    self.status = 'closed'

# 静态方法，模拟验证用户名和密码的过程，如果用户名和密码正确则返回True，否则返回False
@staticmethod
def login(username, password):
    if username == 'user' and password == 'password':
        return True
    else:
        return False

主函数

def main(): # 定义一个空的账户字典 accounts = {} while True: # 输出菜单 print('Welcome to the bank') print('1. Open account') print('2. Deposit') print('3. Withdraw') print('4. Check balance') print('5. Lose card') print('6. Find card') print('7. Close account') print('8. Exit') # 输入选项 choice = input('Enter your choice: ') # 根据选项执行相应的操作 if choice == '1': # 开户，输入账户名，设置初始余额为1000元，创建账户对象并保存到账户字典中 name = input('Enter your name: ') balance = 1000 account = Account(name, balance) accounts[name] = account print('Your account has been opened') elif choice == '2': # 存款，输入账户名和存款金额，查找账户并执行存款操作 name = input('Enter your name: ') amount = int(input('Enter the amount to deposit: ')) account = accounts.get(name) if account: account.deposit(amount) print('Your deposit has been successful') else: print('Account does not exist') elif choice == '3': # 取款，输入账户名和取款金额，查找账户并执行取款操作 name = input('Enter your name: ') amount = int(input('Enter the amount to withdraw: ')) account = accounts.get(name) if account: account.withdraw(amount) print('Your withdrawal has been successful') else: print('Account does not exist') elif choice == '4': # 查询余额，输入账户名，查找账户并执行查询余额操作 name = input('Enter your name: ') account = accounts.get(name) if account: account.query_balance() else: print('Account does not exist') elif choice == '5': # 挂失，输入账户名，查找账户并执行挂失操作 name = input('Enter your name: ') account = accounts.get(name) if account: account.lose_card() print('Your card has been lost') else: print('Account does not exist') elif choice == '6': # 找回卡片，输入账户名，查找账户并执行找回卡片操作 name = input('Enter your name: ') account = accounts.get(name) if account: account.find_card() print('Your card has been found') else: print('Account does not exist') elif choice == '7': # 关闭账户，输入账户名，查找账户并执行关闭账户操作 name = input('Enter your name: ') account = accounts.get(name) if account: account.close_account() del accounts[name] print('Your account has been closed') else: print('Account does not exist') elif choice == '8': # 退出程序 break else: # 无效选项 print('Invalid choice')

if name == 'main': main()