[ARROW-8186] [Python] Dataset expression != returns bool instead of expression for invalid value

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24386
• Assignee: Joris Van den Bossche
• Reporter: Joris Van den Bossche
• Created: 23/Mar/20 13:45
• Updated: 11/Jan/23 07:58
• Resolved: 24/Mar/20 15:52

Description

It's a bit a strange case, but eg when doing != {3} you get a boolean result instead of an expression:

In [8]: ds.field('col') != 3                                                                                                                                                                                       
Out[8]: <pyarrow.dataset.ComparisonExpression (col != 3:int64)>

In [9]: ds.field('col') != {3}                                                                                                                                                                                     
Out[9]: True

Issue Links

• links to: GitHub Pull Request #6700