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Pull requests: pandas-dev/pandas
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BUG: GroupBy.count() and GroupBy.sum() incorreclty return NaN instead of 0 for missing categories Categorical Categorical Data Type Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG: NaT.__cmp__(invalid) should raise TypeError Error Reporting Incorrect or improved errors from pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
BUG30787 fixed unexpected behaviour by removing nullable values Bug ExtensionArray Extending pandas with custom dtypes or arrays. Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#30920 by alagappan97 was closed Feb 12, 2020 Loading…
DOC: Add examples for filling missing data Docs Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale
#38163 by chrystalchan-academic was closed Jan 24, 2021 Loading…
5 tasks
Fixed pct_change with 'fill_method' returning NaN instead of 0 Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
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…
3 tasks done
BUG: fillna overwriting other missing vals Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#40509 by mzeitlin11 was closed Apr 3, 2021 Loading…
4 tasks done
BUG: Fix Series divmod #26987 Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#27130 by jbrockmendel was closed Jul 6, 2019 Loading…
4 tasks done
Implement pd.NA checking function Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#33490 by dsaxton was closed Apr 14, 2020 Loading…
4 tasks
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…
5 tasks done
Fix/empty string datetimelike conversion/issue 36550 Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#36834 by nrebena was closed Nov 27, 2020 Loading…
4 of 5 tasks
BUG: TypeError in groupby pct_change when fill_method is None Bug Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Interpolation nonnumeric error handling Error Reporting Incorrect or improved errors from pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#21773 by kevinislas2 was closed Oct 11, 2018 Loading…
4 tasks done
BUG: Implement interpolating NaT values in datetime series Bug Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#17709 by s-celles was closed Nov 11, 2017 Loading…
4 tasks
Fix #23055 Change pd.to_datetime and pd.to_timedelta to always convert null-like argument into pd.NaT Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#34124 by ghost was closed Jul 10, 2020 Loading…
5 tasks done
DOC: fix template substitution in pad/bfill docstrings Docs Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
test case for transform with fillna #27905 Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Testing pandas testing functions or related to the test suite
#27974 by ukantesaria was closed Oct 22, 2019 Loading…
5 tasks done
MultiIndex: support isna, fixes #34019 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate MultiIndex Needs Info Clarification about behavior needed to assess issue Stale
#38558 by FRidh was closed Feb 11, 2021 Loading…
1 of 5 tasks
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…
1 task done
BUG: resolving issue 16357 - added a check to see if input is pandas.NaT Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#16501 by theodoreschen was closed Oct 14, 2017 Loading…
2 of 4 tasks
ENH: pivot/groupby index with nan (GH3729) Bug Enhancement Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#21669 by andrewdalecramer was closed Nov 23, 2018 Loading…
4 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…
1 of 5 tasks
PR for Pandas issue #14872 / fillna() TZ datetime64 rounded Bug Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Timezones Timezone data dtype
FIX: series.fillna doesn't shallow copy if len(series) == 0 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
PERF: interpolate_1d returns function to apply columnwise Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#34728 by simonjayhawkins was closed Jul 7, 2020 • Draft
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