python 如何在自定义类上使用堆排序

from heapq import heappop, heappush
 
class Movie:
    def __init__(self, title, year):
        self.title = title
        self.year = year
 
    def __str__(self):
        return str.format("Title: {}, Year: {}", self.title, self.year)
 
    def __lt__(self, other):
        return self.year < other.year
 
    def __gt__(self, other):
        return other.__lt__(self)
 
    def __eq__(self, other):
        return self.year == other.year
 
    def __ne__(self, other):
        return not self.__eq__(other)