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BUG: DataFrame.combine_first, combine with non-unique columns #62941

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Merged
merged 1 commit into from
Oct 31, 2025
Merged

BUG: DataFrame.combine_first, combine with non-unique columns #62941

merged 1 commit into from
Oct 31, 2025

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@jbrockmendel jbrockmendel commented Oct 31, 2025

@mroeschke mroeschke added the combine/combine_first/update NDFrame.combine, combine_first, update label Oct 31, 2025
@mroeschke mroeschke added this to the 3.0 milestone Oct 31, 2025
@mroeschke mroeschke merged commit 8226043 into pandas-dev:main Oct 31, 2025
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mroeschke commented Oct 31, 2025

Thanks @jbrockmendel

@jbrockmendel jbrockmendel deleted the bug-combine-unique branch October 31, 2025 20:30
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combine/combine_first/update NDFrame.combine, combine_first, update

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BUG: DataFrame.combine with non-unique columns combine_first: 'DataFrame' object has no attribute 'dtype' with duplicate columns

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