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About Rungwise

Rungwise is interview prep for Python developers, from your first job to six years in.

Good interview prep shouldn’t depend on what you can pay. Every lesson, exercise and tool here is free to use, with no sign-up.

Every lesson starts with a problem you’ve met at work. Then it climbs three steps: an okay answer, a better one and the best one, and when the best one is the wrong choice. You write the code in the page, run tests, and practice saying it out loud. See how a lesson works.

  • There’s no account. Your progress, notes and flashcards stay in this browser, on this device.
  • Clearing your browser’s site data clears your progress.
  • Code you run in a lesson runs in your browser. It isn’t sent anywhere.

New lessons arrive every week. See what’s new, or open any track’s roadmap to see every planned topic.