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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/01/18 01:37:00 UTC

[jira] [Updated] (ARROW-2008) [Python] Type inference for int32 NumPy arrays (expecting list) returns int64 and then conversion fails

     [ https://issues.apache.org/jira/browse/ARROW-2008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney updated ARROW-2008:
--------------------------------
    Summary: [Python] Type inference for int32 NumPy arrays (expecting list<int32>) returns int64 and then conversion fails  (was: [Python] Type inference for int32 NumPy arrays as list<int32> return int64 and then conversion fails)

> [Python] Type inference for int32 NumPy arrays (expecting list<int32>) returns int64 and then conversion fails
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-2008
>                 URL: https://issues.apache.org/jira/browse/ARROW-2008
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.9.0
>
>
> See report in [https://github.com/apache/arrow/issues/1430]
> {{arrow::py::InferArrowType}} is called, when traverses the array as though it were any other Python sequence, and NumPy int32 scalars are not recognized as such



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