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https://issues.apache.org/jira/browse/ARROW-15477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Antoine Pitrou resolved ARROW-15477.
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Fix Version/s: 8.0.0
Resolution: Fixed
Issue resolved by pull request 12312
[https://github.com/apache/arrow/pull/12312]
> [C++][Python] Enable ListArray::FromArrays with custom list type (field
> names/nullability)
> ------------------------------------------------------------------------------------------
>
> Key: ARROW-15477
> URL: https://issues.apache.org/jira/browse/ARROW-15477
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++, Python
> Reporter: Joris Van den Bossche
> Assignee: Joris Van den Bossche
> Priority: Major
> Labels: pull-request-available
> Fix For: 8.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, when creating a ListArray from the values and offets, you get a
> "default" list type:
> {code:python}
> >>> arr = pa.ListArray.from_arrays(pa.array([0, 2, 5], pa.int32()),
> >>> pa.array([1, 2, 3, 4, 5]))
> >>> arr
> <pyarrow.lib.ListArray object at 0x7f75bdf03dc0>
> [
> [
> 1,
> 2
> ],
> [
> 3,
> 4,
> 5
> ]
> ]
> >>> arr.type
> ListType(list<item: int64>)
> {code}
> So a type with default field name ("item") and nullability (true).
> We should allow to specify a type (that needs to be compatible with the
> passed values' type) so you can create a ListArray with specific field names.
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