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PyRun is a free, browser-first place to learn Python — read a short lesson, edit code in a real editor, hit Run, see the result. No installs. No accounts. No backend.
import numpy and the worker fetches it on first use.localStorage. Clear your browser and it's gone — there is no server-side record.PyRun costs nothing to run because there's no server. If you spot a bug or want a lesson added, the code lives in a single file (lib/lessons.ts) — easy to extend.
PyRun is built and maintained by Neuraedge.AI — we ship AI-first products and developer tools. Get in touch:
KeyError. Videos teach recognition, not recall — you nod along, then freeze at a blank editor. So we built the opposite: a code-first platform where you type from minute one, get stuck, and get unblocked by an AI reviewer (powered by Anthropic’s Claude, credited openly) that reads your actual code instead of pointing at a timestamp. Our mission is narrow and unfashionable: get Indian students from “I know Python” to “I shipped Python” before placement season. No certificates for showing up, no gamified streaks for streak’s sake — just the reps that matter.