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![Grouping using multiple columns - Learning pandas - Second Edition [Book]](https://www.oreilly.com/api/v2/epubs/9781787123137/files/assets/fa3ada1b-4951-4c04-808f-11cb84497d80.png "Grouping using multiple columns - Learning pandas - Second Edition [Book]")
Grouping using multiple columns - Learning pandas - Second Edition [Book]
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