实现对象的比较

import functools


class WordTest(str):

    def __new__(cls, word):
        return str.__new__(cls, word)

    def __gt__(self, other):
        return len(self) > len(other)

    def __lt__(self, other):
        return len(self) < len(other)

    def __ge__(self, other):
        return len(self) >= len(other)

    def __le__(self, other):
        return len(self) <= len(other)

    def __eq__(self, other):
        return len(self) == len(other)


@functools.total_ordering  # __eq__ and __gt__( or __lt__)
class Word(str):

    def __new__(cls, word):
        return str.__new__(cls, word)

    def __gt__(self, other):
        return len(self) > len(other)

    def __eq__(self, other):
        return len(self) == len(other)


s1 = Word('ball')
s2 = Word('b')
print(s1 > s2)

True