Comparable classes in Python 3

python class python-3.x comparable
Neil G picture Neil G · Aug 2, 2011 · Viewed 10.5k times · Source

What is the standard way of making a class comparable in Python 3? (For example, by id.)

Answer

agf picture agf · Aug 2, 2011

To make classes comparable, you only need to implement __lt__ and decorate the class with functools.total_ordering. This provides the rest of the comparison operators so you don't have to write any of them yourself.

Related questions

List attributes of an object

Is there a way to grab a list of attributes that exist on instances of a class? class new_class(): def __init__(self, number): self.multi = int(number) * 2 self.str = str(number) a = new_class(2) print(', '.join(a.…

Read More
Saving and loading multiple objects in pickle file?

I have a class that serves players in a game, creates them and other things. I need to save these player objects in a file to use it later. I've tried the pickle module but I don't know how to …

Read More
TypeError: '<' not supported between instances Python

I am solving a problem with genetic algorithm in python 3. I have not completed the full code yet. I test a part of the code whenever I complete it. At present, I am stuck with an error saying: TypeError: '&…

Read More