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BUG: melt losing ea dtype #50316

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Merged
merged 3 commits into from
Dec 17, 2022
Merged

BUG: melt losing ea dtype #50316

merged 3 commits into from
Dec 17, 2022

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phofl
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@phofl phofl commented Dec 17, 2022 

       before           after         ratio
     [1613f26f]       [6b93f528]
-      15.5±0.2ms      9.72±0.07ms     0.63  reshape.Melt.time_melt_dataframe('Float64')

@phofl phofl added Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode NA - MaskedArrays Related to pd.NA and nullable extension arrays labels Dec 17, 2022
@mroeschke mroeschke added this to the 2.0 milestone Dec 17, 2022
@mroeschke mroeschke merged commit cbf80c2 into pandas-dev:main Dec 17, 2022
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Thanks @phofl

phofl added a commit to phofl/pandas that referenced this pull request Dec 17, 2022
@phofl
BUG: melt losing ea dtype (pandas-dev#50316)
6845411 
* BUG: melt losing ea dtype

* Add asv

* Fix mypy
@phofl phofl deleted the 41570 branch December 17, 2022 21:42
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Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays Reshaping Concat, Merge/Join, Stack/Unstack, Explode
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BUG: Column 'Int8Dtype' casted to 'object' type when melted
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