CSV Files

CSV Files are plain-text tabular data files where each row is a record and each column is separated by commas. In Brevvie Python + AI — Section 3: Data, Polars & Pair Programming, CSV is the main file format used for loading example datasets into polars.

Why they matter

• easy to share and inspect
• widely supported across tools
• common starting point for analysis workflows

Caution

CSV files carry table structure but not always reliable type information, so schema and dtype checks are important after loading.