Python Excel/CSV Data Cleaning Script (Customizable Template)

Stop manually cleaning the same messy Excel/CSV export every week. This is a ready-to-run Python script that:

- Trims whitespace and standardizes text case (e.g. " john SMITH" -> "John Smith")

- Parses dates stored in different formats into one consistent format

- Fixes numbers that were saved as text (e.g. "$1,234.50" -> 1234.50)

- Removes duplicate rows

- Flags rows with a missing key field (e.g. missing email) for follow-up

Works on any Excel (.xlsx/.xls) or CSV file. You edit a short CONFIG section at the top to match your column names, then run one command. Tested against real messy order-export data (43 rows -> 40 rows after removing 3 duplicates, 7 rows flagged for missing email).

Includes: the script, a full README with setup instructions, and one free round of help getting it configured for your specific file.

Requirements: Python 3.8+, pandas, openpyxl.

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