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Posted to jira@arrow.apache.org by "Kshiteej K (Jira)" <ji...@apache.org> on 2022/10/28 20:38:00 UTC

[jira] [Assigned] (ARROW-17832) [Python] Construct MapArray from sequence of dicts (instead of list of tuples)

     [ https://issues.apache.org/jira/browse/ARROW-17832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kshiteej K reassigned ARROW-17832:
----------------------------------

    Assignee: Kshiteej K

> [Python] Construct MapArray from sequence of dicts (instead of list of tuples)
> ------------------------------------------------------------------------------
>
>                 Key: ARROW-17832
>                 URL: https://issues.apache.org/jira/browse/ARROW-17832
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Joris Van den Bossche
>            Assignee: Kshiteej K
>            Priority: Major
>              Labels: python-conversion
>
> From https://github.com/apache/arrow/issues/14116
> Creating a MapArray from a python sequence currently requires lists of tuples as values:
> {code}
> arr = pa.array([[('a', 1), ('b', 2)], [('c', 3)]], pa.map_(pa.string(), pa.int64()))
> {code}
> While I think it makes sense that the following could also work (using dicts instead):
> {code}
> arr = pa.array([{'a': 1, 'b': 2}, {'c': 3}], pa.map_(pa.string(), pa.int64()))
> {code}



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