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API: Should indexing on columns give views or copies? #33780

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jbrockmendel opened this issue Apr 24, 2020 · 0 comments
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API: Should indexing on columns give views or copies? #33780

jbrockmendel opened this issue Apr 24, 2020 · 0 comments
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API Design Copy / view semantics Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action

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@jbrockmendel
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Migrating the discussion from #33597:

We can improve performance (and memory footprint) by returning views in more cases. The downsides are 1) the returned DataFrames are less-consolidated and 2) users may be relying on getting copies in some situations.
@jbrockmendel jbrockmendel added Bug Needs Triage Issue that has not been reviewed by a pandas team member labels Apr 24, 2020
@jbrockmendel jbrockmendel mentioned this issue Apr 24, 2020
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@jbrockmendel jbrockmendel added API Design Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action and removed Bug Needs Triage Issue that has not been reviewed by a pandas team member labels Apr 25, 2020
@jorisvandenbossche jorisvandenbossche mentioned this issue May 25, 2020
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@jbrockmendel jbrockmendel mentioned this issue Jul 17, 2020
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@jbrockmendel jbrockmendel mentioned this issue Sep 4, 2020
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DEPR: making copies when indexing along columns jbrockmendel/pandas
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@jorisvandenbossche @jbrockmendel