Roadmap
Day 42 · Data cleaning 50 min 40 XP
🧹Cleaning with pandas
Analysts spend a large share of their time cleaning. pandas gives you a short, repeatable toolkit for missing values, duplicates, messy text and wrong types, and a script can be re-run on tomorrow's file.
What you'll learn
- Find missing values and decide how to handle them
- Remove duplicate rows and tidy text
- Fix column types with to_numeric and astype
A peek inside
Look before you fix
The rest of Day 42 is a Pro lesson
You're on the free Explorer plan — you get the intro and the video. Go Pro to open the full guided lesson (and all 30 days).
- 3 deep-dive lessons
- A copy-paste worked example
- 3 hands-on practice tasks
- Studio task: Clean a messy file and log your choices
- 3-question quiz, up to 45 XP
- 4 quick-glance glossary cards
- 40 XP + streak tracking
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