BUG: fix #59950 handle duplicate column names in dataframe queries #59971
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miguelcsx
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- Fixed an issue where `Dataframe.query()` would throw an unexpected error - The error was caused by `self.dtypes[k]` - Adjusted the behavior to match the behavior prior to pandas version - Added tests to ensure that `Dataframe.query()` works as expected
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miguelcsx
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mroeschke
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Nov 5, 2024
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Thanks @miguelcsx |
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Issue Description
When calling
DataFrame.query()on a DataFrame with duplicate column names, an unexpectedTypeErroris raised due to a change introduced in pandas 2.2.1. The root cause is theself.dtypes[k]returning a Series for duplicate column names instead of a single value, leading to a failure in the query evaluation.Changes Made
Fixed an issue where
Dataframe.query()would throw an unexpected errorThe error was caused by
self.dtypes[k]Adjusted the behavior to match the behavior prior to pandas version
Added tests to ensure that
Dataframe.query()works as expectedPR Checklist
doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.