Real-time communication with Python

Chatterbox

© Photo by Loan on Unsplash

© Photo by Loan on Unsplash

Article from Issue 299/2025
Author(s):

A beginner-friendly guide to building a chat client-server with sockets and multithreading.

Network communication is a fundamental aspect of modern applications, enabling real-time data exchange between distributed systems. In this article, I will explore the development of a simple yet functional chat application using Python, focusing on socket programming and multithreading.

Python is an excellent choice for this task due to its simplicity, extensive standard library, and built-in support for networking and concurrency. The socket module provides a straightforward way to establish TCP/IP connections, while the threading module allows you to manage multiple clients concurrently without blocking execution.

This project introduces key concepts in socket programming by implementing a server that listens for incoming client connections, manages them using threads, and facilitates message exchange. Each client connects to the server, sends messages, and receives real-time updates from other participants, including the server itself. The implementation also features a broadcast system to relay messages efficiently among connected clients. By understanding these mechanisms, you will gain practical experience in building real-time communication systems, laying a foundation for more complex networking applications.

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