PyDebug Teacher 🧑‍🏫

PyDebug Teacher — your own AI Python tutor, in English & Hindi

PyDebug Teacher is a built-in tool on PyDebug for every learner who has ever stared at a Python error and wondered why it happened. Paste any program — or upload a .py file — press Teach Me, and get a complete lesson about YOUR code: what language it is, what it actually does, the real output, every bug with its exact line number, and a line-by-line walkthrough written in plain language. Guest users can try 3 checks per day, free signed-up accounts get 5/day, premium is unlimited.

How does it work?

The brain ships with the website. A rule-based expert system (30+ hand-written bug patterns: type errors, off-by-one indexing, infinite loops, mutable default arguments, missing colons, C-style i++, Python-2 print, shadowed builtins and more) reads your code statically. Then your code is actually executed by Python compiled to WebAssembly (Pyodide) inside your browser tab — the same engine that powers the PyDebug playground — so the output and the traceback are genuine, never guessed. Finally, a traceback translator turns cryptic errors like TypeError: can only concatenate str (not "int") to str into a friendly explanation of what went wrong, why, and how to fix it.

English first, Hindi whenever you want

Every explanation exists in both English and Hindi. The report answers in English by default; tap हिंदी (or Both) at the top and the entire lesson — overview, bug reasons, fixes, line-by-line walkthrough and concept mini-lessons — re-renders in Hindi instantly. Your choice is remembered on your device, so the next visit answers in your language straight away. This makes it a proper Hindi Python teacher for students who think in Hindi but read code in English.

What does the report contain?

Six cards: an overview (detected language with confidence, structure stats), the real run result (program output, or the translated crash), bugs & fixes (severity, line, the faulty line and a corrected version), a line-by-line walkthrough, the concepts your code touches (loops, functions, f-strings, type conversion…) as mini-lessons, and a teacher's note telling you what to revise and practice next. If fixes are available you can copy the corrected code with one click and continue in the playground.

Daily limits and history

Guest users get 3 code checks per day to try the feature. Sign up free and you get 5 checks per day which reset daily at midnight. Premium members get unlimited checks. Every check you run is saved to your personal history (last 50, stored on device and per account) so you can revisit past lessons, reload the code, and track what you’ve learned.

Practice after the lesson

Reading explanations is step one. Lock the ideas in by fixing bug-fix problems, guessing outputs in predict-the-output drills, or daily practice challenges — PyDebug tracks your streak and XP while you learn.