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DEPR: Categorical.to_list #51254

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jbrockmendel opened this issue Feb 8, 2023 · 5 comments · Fixed by #51997 or #52130
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DEPR: Categorical.to_list #51254

jbrockmendel opened this issue Feb 8, 2023 · 5 comments · Fixed by #51997 or #52130
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@SirFudgekins
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API - Consistency Internal Consistency of API/Behavior Categorical Categorical Data Type Deprecate Functionality to remove in pandas good first issue

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@jbrockmendel
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jbrockmendel commented Feb 8, 2023 •
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We have this as an alias for tolist for Categorical but not other EAs. We should either deprecate it or add the alias on the base class. I prefer deprecation.
@jbrockmendel jbrockmendel added Bug Needs Triage Issue that has not been reviewed by a pandas team member labels Feb 8, 2023
@lithomas1 lithomas1 added Categorical Categorical Data Type Deprecate Functionality to remove in pandas API - Consistency Internal Consistency of API/Behavior and removed Bug Needs Triage Issue that has not been reviewed by a pandas team member labels Feb 9, 2023
@phershbe
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@jbrockmendel @lithomas1 I'm interested in working on this. I've done two pull requests on fixing tests here and am interested in learning and contributing more.

Is this as simple as deleting the to_list on Line 555 of https://github.com/pandas-dev/pandas/blob/main/pandas/core/arrays/categorical.py and documenting the change? There are several other instances of to_list when searching the code base, but the others seem to be the aliases for Series and Index.

@jbrockmendel
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I'd suggest waiting to make sure there is consensus that this is worthwhile.

@topper-123
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I agree deprecation is the sensible thing to do here.

@SirFudgekins
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take

@jbrockmendel jbrockmendel mentioned this issue Mar 15, 2023
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@jbrockmendel
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That part of #51997 was reverted, reopening.

@jbrockmendel jbrockmendel reopened this Mar 21, 2023
@jbrockmendel jbrockmendel mentioned this issue Mar 23, 2023
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@SirFudgekins SirFudgekins

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API - Consistency Internal Consistency of API/Behavior Categorical Categorical Data Type Deprecate Functionality to remove in pandas good first issue
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@jbrockmendel @phershbe @topper-123 @SirFudgekins @lithomas1