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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
BUG: Fix Categorical use_inf_as_na bug Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
PERF: add method Categorical.__contains__ Categorical Categorical Data Type Performance Memory or execution speed performance
BUG/DEPR: deprecate Categorical take default behaviour + fix Series[categorical].take Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves
BUG: Fix IntervalIndex.insert to allow inserting NaN Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: list-like to_replace on Categorical.replace is ignored or crash Categorical Categorical Data Type Regression Functionality that used to work in a prior pandas version
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
FIX: REGR: setting numeric value in Categorical Series with enlargement raise internal error Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves
#47751 by CloseChoice was closed Aug 16, 2022 Loading…
5 tasks done
BUG: fix json segfaults Bug Categorical Categorical Data Type Compat pandas objects compatability with Numpy or Python functions Dtype Conversions Unexpected or buggy dtype conversions IO JSON read_json, to_json, json_normalize Timezones Timezone data dtype
CLN: Removed levels attribute from Categorical Categorical Categorical Data Type Deprecate Functionality to remove in pandas
REF: Compute complete result_index upfront in groupby Bug Categorical Categorical Data Type Groupby Refactor Internal refactoring of code
BUG-19214 int categoricals are formatted as ints Categorical Categorical Data Type Output-Formatting __repr__ of pandas objects, to_string
DEPR: Deprecate ordered=None for CategoricalDtype Categorical Categorical Data Type Deprecate Functionality to remove in pandas Dtype Conversions Unexpected or buggy dtype conversions
TYPING: Partial typing of Categorical Categorical Categorical Data Type Typing type annotations, mypy/pyright type checking
BUG: make tz_localize operate on values rather than categories Categorical Categorical Data Type Datetime Datetime data dtype
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
Rename categories with Series Categorical Categorical Data Type Performance Memory or execution speed performance
BUG: Accept dict or Series in fillna for categorical Series Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: Fix groupby sorting on ordered Categoricals (GH25871) Bug Categorical Categorical Data Type Groupby
BUG: df.sort_values() not respecting na_position with categoricals #22556 Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Categorical Categorical Data Type
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