# CSV and Excel cleanup (/data--csv-wrangler)

/data--csv-wrangler is a Claude Code skill in the Data section. Cleans, dedupes and reshapes a CSV or Excel file with a reusable Python script, saving a clean copy and leaving the original untouched.

- Web version: https://skills.sgomez.dev/en/s/data--csv-wrangler
- Section: [Data](https://skills.sgomez.dev/en/data.md)
- Author: Santiago Gómez de la Torre
- License: MIT
- Source: https://github.com/sgomez-dev/claude-skills/blob/main/skills/data/csv-wrangler.md
- Updated 10 Jul 2026

## How to ask for it

- `/data--csv-wrangler clean up this customer CSV and remove duplicates`
- `/data--csv-wrangler transform this Excel file into the format I need to import`
- `/data--csv-wrangler give me a repeatable script to process these files monthly`

## Install

macOS · Linux:

```
curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash
```

Windows:

```
irm https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.ps1 | iex
```

Claude Code plugin:

```
/plugin marketplace add sgomez-dev/claude-skills
/plugin install data-skills@claude-skills-collection
```

## Permissions

- Reads: `*.csv`, `*.tsv`, `*.xlsx`, `*.xls`
- Writes: `*_clean.csv`, `*_clean.xlsx`, `wrangle_*.py`
- Runs: `python`, `pip`
- Network: No
- Destructive: No

## Author's description

Clean, transform, dedupe, and reshape CSV/Excel files with a repeatable script

- [How we review this](https://skills.sgomez.dev/en/methodology.md)