pythonbook.io is a free, browser-based Python IDE that lets you write, run, and share Python code instantly. No installation, no setup, no login required — just open your browser and start coding. It's also home to ThePythonBook, an interactive blog-style tutorial series that teaches Python from the ground up with hands-on exercises and real code.
pythonbook.io and ThePythonBook are created by Selva Prabhakaran, a developer and educator passionate about making Python accessible to everyone.
We believe learning and using Python should be accessible to everyone, everywhere. Whether you're a student learning to code, a teacher demonstrating concepts, a data scientist prototyping ideas, or a developer sharing code snippets — pythonbook.io provides a fast, reliable, and private environment for all your Python needs.
ThePythonBook is our interactive Python tutorial series — a structured curriculum of blog-style lessons that cover everything from beginner fundamentals to advanced topics like data science and machine learning.
Your code is your business. pythonbook.io runs entirely in your browser using WebAssembly technology. Your code executes locally on your device and is never uploaded to any server. Auto-save uses your browser's local storage, keeping everything private and secure.
Built with modern web technologies including Next.js, TypeScript, Pyodide (Python compiled to WebAssembly), and CodeMirror. We leverage the power of modern browsers to deliver a desktop-quality IDE experience without any installation.
For questions, feedback, or support, please reach out to us at pythoncompileronline@gmail.com.