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Allow df.rename() to take a function that maps old to new column names #13229

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Wainberg opened this issue Dec 24, 2023 · 0 comments · Fixed by #13708
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Allow df.rename() to take a function that maps old to new column names #13229

Wainberg opened this issue Dec 24, 2023 · 0 comments · Fixed by #13708
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enhancement New feature or an improvement of an existing feature

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@Wainberg
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Currently df.rename(mapping) only accepts a dict as the mapping. It would be nice to also support a lambda function like pandas, as syntactic sugar for df.select(pl.all().name.map(mapping)).
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feat(python): allow df.rename and lf.rename to take a renaming function Wainberg/polars
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@Wainberg