通过方法修改属性的值

Question

class UniversityAthletics():
    def __init__(self, university_name, sport):
        self.name = university_name
        self.sport = sport
        self.tickets_sold = 10

    def tickets_sold(self):
        """This just tells you how many tickets have been sold"""
        print(str(self.tickets_sold) + " tickets have been sold")

    def describe_athletics(self):
        print(self.name.title() + " " + self.sport.title())

    def in_season(self):
        print(self.sport.title() + " is in season.")

    def set_tickets_sold(self, numticket):
        """This sets the number of tickets that have been sold"""
        self.tickets_sold = numticket

    def increment_tickets_sold(self, moretickets):
        """This increments the number of tickets sold"""
        self.tickets_sold += moretickets

athletics = UniversityAthletics('salisbury university', 'soccer')
athletics.set_tickets_sold(20)
athletics.tickets_sold()
athletics.increment_tickets_sold(500)
athletics.tickets_sold()

我试图设置一个属性，设置售出的票数'set_tickets_sold'，然后是一个属性，用于更改票证'increment_tickets_sold'的数量，但是当我尝试设置票数时，然后调用方法'tickets_sold （）'我一直收到错误。

  

Traceback（最近一次调用最后一次）：文件   “E：/ WorWic / IntroToProgramming / chapter9 /大学田径部分   2.py“，第29行，in       athletics.tickets_sold（）TypeError：'int'对象不可调用

我做错了什么？

Answer 1

您的问题是tickets_sold既是属性又是函数名称。它获取属性并调用它，而不是函数。我建议将你的功能重命名为其他内容。