Reference library

OOP & classes

Classes, instances, methods, dataclasses, and object-oriented design in Python.

1 match
OOP & classes easy

Python object equality: id vs value comparison

Demonstrates the difference between default identity comparison and custom equality, with a value-based class implementing __eq__ and __hash__.

oop equality hash
Python 
import copy


class IdOnly:
    def __init__(self, name):
        self.name = name


class ValueId:
    def __init__(self, name):
        self.name = name

    def __eq__(self, other):
        return isinstance(other, ValueId) and self.name == other.name

    def __hash__(self):
        return hash(self.name)

    def…
12 0 Open

Browse by section

Each section groups closely related Python snippets.

OOP & classes — Python code examples

What you will find here

This page collects oop & classes snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup. Python code samples Copy-ready snippets to study and run in the IDE.