Python Fiddle lets you share runnable code with your students in seconds — no servers to manage, no environments to configure, no class time wasted on setup.
Prepare a notebook, copy the URL, post it to your LMS. Students open it and run your code instantly.
Students need nothing installed. Any device with a browser works — school computers, Chromebooks, phones.
numpy, pandas, matplotlib, scikit-learn and hundreds more — available without a single pip install.
The core notebook and sharing features are free. No budget approvals, no per-seat licensing.
Write code and explanatory text in the same document. Mix markdown, code cells, and output — great for structured lessons.
Open a Notebook →Students can ask the built-in AI tutor for help when they get stuck — reducing interruptions and letting them work at their own pace.
See the AI Tutor →Assign practice problems from a library of challenges at newbie, beginner, intermediate, and advanced levels.
Browse Challenges →Help students understand how code executes step by step — ideal for teaching loops, recursion, and data structures.
Open Visualizer →Prepare a code example, problem, or demo — then share the URL with your class. Students can open it instantly, run the code, and fork their own copy to work from.
Post this link on your LMS — students click and code
Compatible with Canvas, Moodle, Blackboard, Google Classroom, and any platform that accepts links
Powered by Pyodide, Python Fiddle supports hundreds of packages out of the box — no installation steps for you or your students.
Free to use. No setup for you or your students. Just write, run, and share.