Make one repeatable file task easier to run.

Fictional example — not a customer result.

Starting point

Illustrative scenario: A fictional retailer combines three weekly exports, standardizes dates and groups totals by store.

Illustrative delivery

Illustrative output: A script reads copies of the inputs, validates expected columns and produces the agreed summary. Tests cover a normal batch and missing-column errors; source files stay intact.

Inside the package

• Python script supplied as a .py.txt download
• Run instructions
• Test fixtures and results
• Error-handling notes

This example explains the output; your delivery is prepared from your approved sources after purchase.