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https://issues.apache.org/jira/browse/ARROW-11412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joris Van den Bossche updated ARROW-11412:
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Summary: [Python] Expressions not working wiht logical boolean operators
(and, or, not) (was: [Python] Expression evaluation problem for logical
boolean expressions (and, or, not))
> [Python] Expressions not working wiht logical boolean operators (and, or,
> not)
> -------------------------------------------------------------------------------
>
> Key: ARROW-11412
> URL: https://issues.apache.org/jira/browse/ARROW-11412
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 2.0.0, 3.0.0
> Reporter: Roman Karlstetter
> Assignee: Joris Van den Bossche
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> There's a problem with boolean "and", "or" and "not" expressions when
> creating them in python (or I'm doing something completely stupid).
>
> {code:java}
> >>> import pyarrow
> >>> pyarrow.__version__
> '3.0.0'
> >>> import pyarrow.dataset as ds
> >>> ds. scalar(False) and ds.scalar(True) # <--- I expect false
> <pyarrow.dataset.Expression true>
> >>> ds.scalar(True) and ds.scalar(False) # this works
> <pyarrow.dataset.Expression false>
> >>> ds.scalar(True) or ds.scalar(False) # this works
> <pyarrow.dataset.Expression true>
> >>> ds.scalar(False) or ds.scalar(True) # <--- I expect true
> <pyarrow.dataset.Expression false>
> >>> not ds.scalar(True) # this works
> >>>
> >>>
> >>>
> False
>
>
> >>> not ds.scalar(False) <--- I expect true
> >>>
> >>>
> >>>
> False
> {code}
> I tried to figure out what goes wrong here, but there are no obvious problems
> in the python code, same for C++ (but I didn't quite understand everything of
> it yet).
>
> This happens with pyarrow3 and pyarrow2
>
>
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