Real Python Tutorials

Python's .__call__() Method: Creating Callable Instances
NEW

Python's .__call__() Method: Creating Callable Instances

In this tutorial, you'll learn what a callable is in Python and how to create callable instances using the .__call__() special method in your custom classes. You'll also code several examples of practical use cases for callable instances in Python.

May 24, 2023 intermediate python

— FREE Email Series —

🐍 Python Tricks 💌

Python Tricks Dictionary Merge

🔒 No spam. Unsubscribe any time.

Browse Topics Guided Learning Paths
Basics Intermediate Advanced
api best-practices community databases data-science devops django docker flask front-end gamedev gui machine-learning projects python testing tools web-dev web-scraping

Explore Real Python

Learning Paths
Guided study plans for accelerated learning
Python Tutorials
In-depth articles and step-by-step video courses
Quizzes
Check your learning progress
Browse Topics
Focus on a specific area or skill level
Community Chat
Learn with other Pythonistas
Office Hours
Live Q&A calls with an expert from the Real Python Team
Podcast
Hear what’s new in the world of Python programming
Books
Round out your knowledge and learn offline

New Releases

View All »
The k-Nearest Neighbors (kNN) Algorithm in Python

Using k-Nearest Neighbors (kNN) in Python

May 23, 2023 data-science intermediate machine-learning

How to Launch an HTTP Server in One Line of Python Code

How to Launch an HTTP Server in One Line of Python Code

May 22, 2023 intermediate

ChatGPT: Your Personal Python Coding Mentor

ChatGPT: Your Personal Python Coding Mentor

May 17, 2023 basics best-practices

Python Metaclasses and Metaprogramming

Metaclasses in Python

May 16, 2023 advanced python

Using and Creating Global Variables in Your Python Functions

Using and Creating Global Variables in Your Python Functions

May 15, 2023 best-practices intermediate python

Python Monthly News

Python News: What's New From April 2023

May 10, 2023 community

Remove ads
The Python Standard REPL: Try Out Code and Ideas Quickly

Getting the Most Out of the Python Standard REPL

May 09, 2023 basics tools

Build Robust Continuous Integration With Docker and Friends

Build Robust Continuous Integration With Docker and Friends

May 08, 2023 advanced devops docker flask tools web-dev

Efficient String Concatenation in Python

Efficient String Concatenation in Python

May 03, 2023 basics best-practices python

How to Publish an Open-Source Python Package to PyPI

Publishing Python Packages to PyPI

May 02, 2023 best-practices intermediate tools

SOLID Principles: Improve Object-Oriented Design in Python

SOLID Principles: Improve Object-Oriented Design in Python

May 01, 2023 best-practices intermediate python

Python Classes: The Power of Object-Oriented Programming

Python Classes: The Power of Object-Oriented Programming

Apr 26, 2023 intermediate python

Python's assert: Debug and Test Your Code Like a Pro

Using Python's assert to Debug and Test Your Code

Apr 25, 2023 best-practices intermediate python

Python Face Recognition and Face Detection

Build Your Own Face Recognition Tool With Python

Apr 24, 2023 intermediate machine-learning

How to Get Normally Distributed Random Numbers With NumPy

How to Get Normally Distributed Random Numbers With NumPy

Apr 19, 2023 intermediate

Python Basics: Installing Packages With pip

Python Basics: Installing Packages With pip

Apr 18, 2023 basics python

Python 3 "pathlib" Module: Taming The Filesystem

Python's pathlib Module: Taming the File System

Apr 17, 2023 intermediate python

How to Get the Most Out of PyCon

How to Get the Most Out of PyCon US

Apr 12, 2023 community