Data Cleaning Exercises

Dataset pack

User active flags

A user export with the active flag stored as text in mixed case.

Fictional data · UTF-8 CSV, every value quoted so padding and leading zeros survive; empty fields are missing values · free for personal and classroom practice · practise it in The text 'false' is true in Python.

users 13 rows × 3 columns

Download users.csv (Pro)

Data dictionary

id
Unique user ID.
email
Email as typed.
active
Active flag as text.

Values are shown in quotes so leading and trailing spaces are visible. ∅ means the cell is missing. Exercises are also graded on hidden datasets that are never published.