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https://issues.apache.org/jira/browse/ARROW-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17661585#comment-17661585
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Rok Mihevc commented on ARROW-4563:
-----------------------------------
This issue has been migrated to [issue
#21109|https://github.com/apache/arrow/issues/21109] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [Python] pa.decimal128 should validate inputs
> ---------------------------------------------
>
> Key: ARROW-4563
> URL: https://issues.apache.org/jira/browse/ARROW-4563
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.12.0
> Reporter: Antoine Pitrou
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.13.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> The precision shouldn't be higher than 38, but 39 is happily accepted
> currently:
> {code:python}
> >>> ty = pa.decimal128(39, 0)
> >>>
> >>> arr = pa.array([2**127], type=ty)
> >>>
> >>> arr
> >>>
> <pyarrow.lib.Decimal128Array object at 0x7f9b89444138>
> [
> -170141183460469231731687303715884105728
> ]
> {code}
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