5  Polars

Command line tools allow you to do those repetitive data work easily. The following three examples are.
1. argparse and duckdb.
2. click and polars.
3. clap and polars.

CLI - argparse 1

CLI - argparse 2

CLI - argparse 3

CLI - click 1

CLI - click 2

CLI - click 3

CLI - click 4

CLI - clap 1

CLI - clap 2