Question

执行此操作时，我收到错误消息：

D:\SARFARAZ\Python>Python assignment_01.py   
Traceback (most recent call last):
  File "assignment_01.py", line 35, in <module>
    BankAcc1 = BankAcc('Sarfaraz',12345,50000)
TypeError: object() takes no parameters

代码：

#Assignment_01 : Class Creation
class BankAcc(object):
    int_rate = 0.7
    balance = 0

    #def **_init_**(self, name, number, balance):  --> error was in this line, I've corrected it now as below
    def __init__(self, name, number, balance):
        self.name = name
        self.number = number
        self.balance = balance

    def withdraw(self, amount):
        self.balance -= amount
        return self.balance

    def deposit(self, amount):
        self.balance += amount
        return self.balance

    def add_interest(self):
        self.interest = int_rate * self.balance
        self.balance += self.interest
        return self.balance

'''class MinimumBalanceAccount(BankAccount):
    def __init__(self, min_bal):
        BankAccount.__init__(self)
        self.min_bal = 500

    def withdraw(self, amount):
        if self.balance - amount < self.min_bal:
            print ("Sorry, minimum balance must be maintained.")
        else:
            BankAccount.withdraw(self, amount)'''

BankAcc1 = BankAcc('Sarfaraz',12345,50000)
BankAcc2 = BankAcc1.withdraw(1000)
print (BankAcc2)

我正在尝试创建一个对象，然后尝试调用 withdraw（）方法在取消一些金额后打印余额。

Answer 1

您的__init__方法名称中有拼写错误：

def _init_(self, name, number, balance):

您需要在开头和结尾使用两个下划线。

如果没有有效命名的__init__方法，Python将回退到object.__init__，它不带任何参数。

python对象（）不带参数

1 个答案: