类和对象

class Ticket:    def __init__(self, weekend = False, child = False):        self.exp = 100        if weekend:            self.inc = 1.2        else:            self.inc = 1        if child:            self.discount = 0.5        else:            self.discount = 1    def calMoney(self, num):        return self.exp*self.inc*self.discount*numadult = Ticket()child = Ticket(child=True)print('2个成人+1个小孩平日票价是%.2f 元人民币'%(adult.calMoney(2)+child.calMoney(1)))