class BankAccount: def init(self, balance): self.balance = balance

def withdraw(self, amount):
    if isinstance(amount, list):
        for a in amount:
            self.balance -= a
    elif isinstance(amount, tuple):
        amount, currency = amount
        if currency == 'USD':
            amount *= 40
        self.balance -= amount
    else:
        self.balance -= amount

def get_balance(self):
    return self.balance

Пример использования

account = BankAccount(1000) account.withdraw(100) account.withdraw((50, 'USD')) account.withdraw([20, 30, 50])

print(account.get_balance()) # Выведет 750