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Python Object-Oriented Python Dice Roller Compare and Contrast

Compare and Contrast

I'm not sure what I'm doing wrong with this lesson. I've tried a few paths to no avail.

songs.py
class Song:
    def __init__(self, artist, title, length):
        self.artist = artist
        self.title = title
        self.length = length

    def __int__(self):
        return self.length

    def __eq__(self, other)
        return int(self.length) == int(other.length)

    def __lt__(self, other):
        return int(self.length) < int(other.length)

    def __gt__(self, other):
        return int(self.length) > int(other.length)

    def __le__(self, other):
        return int(self.length) <= int(other.length)

    def __ge__(self, other):
        return int(self.length) >= int(other.length)