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Pull requests: pandas-dev/pandas
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API: categorical grouping will no longer return the cartesian product API Design Categorical Categorical Data Type Groupby
PERF: CategoricalIndex.get_loc should avoid expensive cast of .codes to int64 Categorical Categorical Data Type Performance Memory or execution speed performance
#21699 by topper-123 was closed Oct 19, 2018 Loading…
2 of 4 tasks
Categorical.(get|from)_dummies Categorical Categorical Data Type Enhancement Stale
#34426 by clbarnes was closed Mar 21, 2021 Loading…
5 tasks done
Deprecate groupby/pivot observed=False default Categorical Categorical Data Type Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Stale
#35967 by jseabold was closed Jul 11, 2021 Loading…
5 tasks done
BUG: Categorical.unique should keep dtype unchanged API Design Bug Categorical Categorical Data Type
pivot_table very slow on Categorical data; how about an observed keyword argument? #24923 Categorical Categorical Data Type Performance Memory or execution speed performance
PERF: fix #32976 slow group by for categorical columns Categorical Categorical Data Type Performance Memory or execution speed performance Stale
#33739 by rtlee9 was closed Nov 6, 2020 Loading…
5 tasks done
API/DEPR: Change default skipna behaviour + deprecate numeric_only in Categorical.min and max API Design Categorical Categorical Data Type Deprecate Functionality to remove in pandas
API: remove ordered requirement in Categorical.searchsorted API Design Categorical Categorical Data Type
minor inconsistency in Categorical.remove_categories error message Categorical Categorical Data Type Error Reporting Incorrect or improved errors from pandas
BUG: Fix Categorical comparsion with Series of dtype 'category' Bug Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions
#16667 by funnycrab was closed Dec 10, 2017 Loading…
4 tasks
BUG: Fix groupby observed=True when aggregating a column Bug Categorical Categorical Data Type Groupby
Add fix to raise error when category value 'x' is not predefined but is assigned through df.loc[..]=x Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves
#34011 by chrispe was closed Oct 4, 2021 Loading…
4 tasks done
BUG: CategoricalIndex.get_indexer issue with NaNs (#45361) Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#45373 by Shashank-Shet was merged Jan 28, 2022 Loading…
2 of 4 tasks
Fix GroupBy nth Handling with Observed=False Categorical Categorical Data Type Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: preserve categorical & sparse types when grouping / pivot & preserve dtypes on ufuncs Bug Categorical Categorical Data Type ExtensionArray Extending pandas with custom dtypes or arrays. Groupby Sparse Sparse Data Type
BUG: Merge on CategoricalIndex fails if left_index=True & right_index=True, but not if on={index} #28189 Categorical Categorical Data Type Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#28296 by hugoecarl was closed Dec 17, 2019 Loading…
5 tasks done
PERF: __contains__ method for Categorical Categorical Categorical Data Type Performance Memory or execution speed performance
#21022 by fjetter was closed Jun 19, 2018 Loading…
4 tasks done
BUG: CategoricalIndex.searchsorted doesn't return a scalar if input was scalar Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves
Handling conversion of empty categorical with dtype_backend='pyarrow' Bug Categorical Categorical Data Type Stale
BUG: errors and segfaults in groupby cython transforms (#16771) Categorical Categorical Data Type Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
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