Source: 📖 Python Cookbook ch8.24 p321

Making classes support comparison operators

Classes can be made to support comparison operators (>, >=, <, <=, != etc). To do this, the methods __eq__, __lt__, __le__, __gt__, __ge__ must be defined. Thankfully, the total_orddering decorator from functools automates the creation of most of these methods if you only define __eq__ and one other.

from functools import total_ordering


@total_ordering
class Square:
	__init__(self, side_length):
		self.side_length = side_length
		self.perimeter = side_length * 4
		self.area = self.side_length ** 2
		
	def __eq__(self, other):
		return self.area == other.area		# Comare areas
	
	def __lt__(self, other):
		return self.area < other.area
		
small_sq = Square(4)
big_sq = Square(5)

print(big_sq > small_sq)		# True

It is not difficult to define each comparison method individually, but using this decorator is quicker and easier.