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[python][pandas] df.groupby('a').agg({'b':lambda x: list(x)})

승가비 2022. 8. 6. 06:48
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df.groupby('a').agg({'b':lambda x: list(x)})

https://stackoverflow.com/questions/22219004/how-to-group-dataframe-rows-into-list-in-pandas-groupby

 

How to group dataframe rows into list in pandas groupby

I have a pandas data frame df like: a b A 1 A 2 B 5 B 5 B 4 C 6 I want to group by the first column and get second column as lists in rows: A [1,2] B [5,5,4] C [6] Is it possible to do somethin...

stackoverflow.com

 

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