[jira] [Resolved] (ARROW-12492) [Python] Add an helper method to decode a DictionaryArray back to a plain Array

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-12492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li resolved ARROW-12492.
------------------------------
    Fix Version/s: 5.0.0
       Resolution: Fixed

Issue resolved by pull request 10123
[https://github.com/apache/arrow/pull/10123]

> [Python] Add an helper method to decode a DictionaryArray back to a plain Array
> -------------------------------------------------------------------------------
>
>                 Key: ARROW-12492
>                 URL: https://issues.apache.org/jira/browse/ARROW-12492
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>            Reporter: Alessandro Molina
>            Assignee: Alessandro Molina
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 5.0.0
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> To create a DictionaryArray pyarrow currently offers the {{Array.dictionary_encode}} helper, but there is a lack of an obvious way to do the reverse. A {{DictionaryArray.decode}} helper could provide an immediate obvious solution to get back an unrolled Array from the dictionary encoded version.



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