273. 메서드에서 self로 클래스 변수 늘리기

1class Ticket:
2    count = 0
3 
4    def __init__(self):
5        Ticket.count += 1
6 
7    def use(self):
8        self.count += 1
9 
10 
11t1 = Ticket()
12t2 = Ticket()
13t1.use()
14t1.use()
15print(Ticket.count, t1.count, t2.count)
16Ticket.count = 7
17print(t1.count, t2.count)