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Pull requests: pandas-dev/pandas
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TST: add fillna test for filling with Categorical Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Tests Unit test(s) needed to prevent regressions Stale
#62319 by thaiv28 was closed Nov 1, 2025 Loading… updated Nov 1, 2025
3 tasks done
BUG: Added deprecation warning to Timestamp constructor Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale Timestamp pd.Timestamp and associated methods
PDEP-11: Change default of dropna to False Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP pandas enhancement proposal Stale
#53094 by rhshadrach was closed Jun 8, 2025 Loading… updated Jun 8, 2025
BUG: fix #59965 skipna=True operations don't skip NaN in FloatingArrays Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays Reduction Operations sum, mean, min, max, etc. Stale
#59997 by cooolheater was closed Feb 10, 2025 Loading… updated Feb 10, 2025
3 tasks done
feat!: Removes Relating to inplace parameter or equivalent Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Resample resample method Stale
inplace option for `pandas.core.resample.Resampler.i… inplace #58847 by cbpygit was closed Oct 29, 2024 Loading… updated Oct 29, 2024
5 tasks done
ENH: Processing of .mask() for pd.NA #56844 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale
#58730 by mafaldam was closed Jul 22, 2024 Loading… updated Jul 22, 2024
1 of 5 tasks
Make Series[datetime64] - pd.NaT behave like DatetimeIndex - pd.NaT Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#18960 by jbrockmendel was closed Jan 1, 2018 Loading… updated May 11, 2023
4 tasks done
skipna added to groupby numeric ops Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#15772 by mayukh18 was closed Oct 28, 2017 Loading… updated May 11, 2023
2 of 4 tasks
WIP: ENH: pivot/groupby index with nan Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#12607 by nbonnotte was closed Jul 26, 2017 Loading… updated May 11, 2023
17 of 36 tasks
[BUG] Fix interpolation for datetimelike dtypes Datetime Datetime data dtype Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#21915 by jbrockmendel was closed Jul 17, 2018 Loading… updated Nov 16, 2022
4 tasks done
Bugfix for constructing empty Series, with index, using ExtensionDtyp… Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
API: allow nan-likes in StringArray constructor ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Strings String extension data type and string data
#41412 by lithomas1 was closed Apr 24, 2022 Loading… updated May 12, 2022
4 tasks done
Astype keeps nan when converting into string Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#28176 by makbigc was closed May 8, 2020 Loading… updated Feb 6, 2022
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… updated Jan 28, 2022
2 of 4 tasks
EA: fillna should accept same type #32414 ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale Testing pandas testing functions or related to the test suite
#43230 by Bhavay-2001 was closed Jan 16, 2022 Loading… updated Jan 16, 2022
1 task done
TYP: Made ffill_indexer arg-type ndarray Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Typing type annotations, mypy/pyright type checking
BUG: IntegerArray/FloatingArray constructors mismatched NAs ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays
BUG: isin fails to correctly compare None values. Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Regression Functionality that used to work in a prior pandas version
#41145 by DriesSchaumont was closed Oct 4, 2021 • Draft updated Oct 4, 2021
2 of 4 tasks
TST: Add test to verify DataFrame's constructor doesn't convert Nones to strings on string columns Constructors Series/DataFrame/Index/pd.array Constructors Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Testing pandas testing functions or related to the test suite
#40912 by cgarciae was closed Sep 1, 2021 Loading… updated Sep 1, 2021
3 tasks done
TST Providing unit test to snippet GH32414 Categorical Categorical Data Type ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Testing pandas testing functions or related to the test suite
#43136 by Bhavay-2001 was closed Aug 27, 2021 Loading… updated Aug 27, 2021
1 task done
BUG GH#40498 Add mask to fillna to only modify indexes specified in v… Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: Index.get_indexer_non_unique misbehaves with multiple nan Indexing Related to indexing on series/frames, not to indexes themselves Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ENH: column-wise DataFrame.fillna with Series/Dict value Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#38352 by arw2019 was closed Jul 11, 2021 Loading… updated Jul 11, 2021
5 tasks done
BUG: groupby any/all raising with pd.NA object data Bug Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
TYP overload fillna #40737 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Typing type annotations, mypy/pyright type checking
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