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https://issues.apache.org/jira/browse/ARROW-13883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17414244#comment-17414244
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Joris Van den Bossche commented on ARROW-13883:
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See also ARROW-7071 for a discussion about how to expose setting a validity
bitmap to an existing array, which can be used for similar purposes as
{{pa.array(..., mask=..}} if you have a mask as pyarrow array (there are
differences though)
> [Python] Allow usage of Arrow arrays as masks of other arrays
> -------------------------------------------------------------
>
> Key: ARROW-13883
> URL: https://issues.apache.org/jira/browse/ARROW-13883
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Affects Versions: 5.0.0
> Reporter: Alessandro Molina
> Assignee: Alessandro Molina
> Priority: Major
>
> At the moment we only allow using {{numpy}} arrays for masks when building
> new arrays. It would be helpful to allow using a {{pyarrow.Array}} too so
> that the user has more flexibility and we can avoid involving {{numpy}} in
> documentation examples for the sole purpose of creating masks.
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