PyChallenge

Loading your exercises

+{{ xpPopup.amount }} XP

{{ trackDone }}/{{ totalExercises }}

Today

Appearance

Mode

Shortcuts

Run code{{ runKeyLong }}

Previous / next track[ ]

Undo a reset{{ isMacKey }}Z

Close menusEsc

Theme

{{ currentExercise ? currentExercise.topic : activeTrack.label }} {{ topicPos }}/{{ topicList.length }}

Exercises {{ EXERCISES.length }}

{{ currentExercise ? 'Continue where you left off' : 'Start here' }} {{ (currentExercise || nextInTrack(selectedTrack)).title }} {{ activeTrack.emoji }} {{ activeTrack.label }} · {{ (currentExercise || nextInTrack(selectedTrack)).topic }}

{{ completedCount }} solved {{ streak }} day streak {{ streakSafe ? '· kept today' : (streak ? '· at risk' : '') }} {{ xp }} XP Today

{{ activeTrack.emoji }} {{ activeTrack.label }} · {{ browseCount }} match{{ browseCount === 1 ? '' : 'es' }}

{{ trackPct(selectedTrack) }}% done

{{ topic }} {{ exercises.filter(e => isCompleted(e.id)).length }}/{{ exercises.length }}

Nothing in this track matches “{{ search }}”.

Where you lose most time

Progress & streaks

{{ nextMilestone.left }} more to {{ nextMilestone.target }} solved {{ completedCount }} / {{ nextMilestone.target }}

Nearly finished

Last 12 weeks · {{ activeDays }} active day{{ activeDays === 1 ? '' : 's' }}

{{ currentExercise.difficulty }} +{{ currentExercise.xp }} XP

Expected output

{{ currentExercise.expectedOutput }}

💡 {{ i }}

{{ currentExercise.hints[i - 1] }}

Working solution

{{ solutionText }}

🐍

Pick an exercise to start

solution.py

⌘Z to undo

{{ pyodide ? 'Python 3.11 · Pyodide' : 'starting runtime' }} {{ runKeyLong }} to run Ln {{ cursor.line }}, Col {{ cursor.col }} UTF-8 Python

tap to open

Passed{{ lastEarned ? ' · +' + lastEarned + ' XP' : '' }}

Output doesn’t match