Dataset pack
Members, postcodes and opt-in flags
Member records with leading-zero identifiers and opt-in flags written many ways.
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 Keep identifiers as text and parse yes/no flags.
members 17 rows × 3 columns
Download members.csvData dictionary
- member_id
- Six-digit member ID with leading zeros; unique.
- postcode
- Five-digit postcode with leading zeros; may be padded or missing.
- opted_in
- Opt-in answer as typed (Y, yes, TRUE, 1, N, …); may be missing or unrecognized.
| member_id | postcode | opted_in |
|---|---|---|
| "008417" | "98506 " | "true" |
| "000002" | " 02139 " | "maybe" |
| "002939" | ∅ | "0" |
| "015246" | " 51389" | "y" |
| "077927" | " 08222" | "N" |
| "092803" | "30041" | "true" |
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.