如何通过实例方法传递整数并将其添加到实例变量中？

Question

我试图bonus用实例变量添加参数（它将采用整数），self.pay并想用工人的姓名打印最终付款。但是，我无法打印增加的总付款我想调用该方法rise()而不是从中返回任何内容，但我很困惑如何调用它并传递一个整数。class Information:    def __init__(self,first,last,pay):        self.first = first        self.last = last        self.pay = pay    def rise(self,int(bonus)):        self.pay = self.pay + bonus    def __str__(self):        return "%s and %s and has a balance of %s" % (self.first,self.last,self.pay)if __name__ == "__main__":    emp1 = Information("tom","jerry",999)    print (emp1)

Answer 1

我试过下面的代码。

我将defrise(self,int(bonus)): 更新为defrise(self,bonus):

class Information:

    def __init__(self,first,last,pay):

        self.first = first

        self.last = last

        self.pay = pay

    def rise(self,bonus):

        self.pay = self.pay + bonus

    def __str__(self):

        return "%s and %s and has a balance of %s" % (self.first,self.last,self.pay)

if __name__ == "__main__":

    emp1 = Information("tom","jerry",999)

    emp1.rise(89)

    print (emp1)

Answer 2

class Information:

    def __init__(self,first,last,pay):

        self.first = first

        self.last = last

        self.pay = pay

    def raise_salary(self, bonus):

        self.pay += int(bonus) # exception if bonus cannot be casted

    def __str__(self):

        return "%s and %s and has a balance of %s" % (self.first,self.last,self.pay)

if __name__ == "__main__":

    emp1 = Information("tom", "jerry", 999)

    print(emp1)

    emp1.raise_salary('1000') # or just emp1.raise(1000)

    print(emp1)