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API: Make 'D' & offsets.Day always operate as calendar day instead of 24 Hour API Design Enhancement Frequency DateOffsets Needs Discussion Requires discussion from core team before further action
#41943 opened Jun 11, 2021 by mroeschke
2 tasks
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DISC: Remove DTA/TDA/PA freq Deprecate Functionality to remove in pandas Frequency DateOffsets Needs Discussion Requires discussion from core team before further action
#24566 opened Jan 2, 2019 by jbrockmendel
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astype(str) / astype_unicode: np.nan converted to "nan" (checknull, skipna) Astype Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Strings String extension data type and string data
#25353 opened Feb 17, 2019 by ThibTrip
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DEPR: pandas/core Deprecate Functionality to remove in pandas
#27522 opened Jul 22, 2019 by jreback
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BUG: DTA/TDA setitem breaks freq on views Bug Frequency DateOffsets
#31218 opened Jan 22, 2020 by jbrockmendel
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ENH: re-implement DataFrame.lookup. Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#40140 opened Mar 1, 2021 by erfannariman
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@stevenae @lohraspco
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BUG: Styler.to_excel does not export styles and formats correctly Bug IO Excel read_excel, to_excel Master Tracker High level tracker for similar issues Styler conditional formatting using DataFrame.style
#42276 opened Jun 28, 2021 by attack68
3 of 5 tasks
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BUG: DataFrame.dtypes doesn't include backend for string columns Bug DataFrame DataFrame data structure Output-Formatting __repr__ of pandas objects, to_string Strings String extension data type and string data
#50099 opened Dec 7, 2022 by jrbourbeau
2 of 3 tasks
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API: Breaking Changes in 3.0 (without deprecations) API - Consistency Internal Consistency of API/Behavior Deprecate Functionality to remove in pandas Master Tracker High level tracker for similar issues
#44823 opened Dec 8, 2021 by jbrockmendel
2 of 8 tasks
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DEPR: List of deprecations to be removed in 3.0 Deprecate Functionality to remove in pandas Master Tracker High level tracker for similar issues
#50578 opened Jan 5, 2023 by datapythonista 100+
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API: Index.__array_wrap__ stop special-casing bool dtype API Design Index Related to the Index class or subclasses
#52676 opened Apr 14, 2023 by jbrockmendel
DEPR: Index == Series should return NotImplemented Deprecate Functionality to remove in pandas
#36759 opened Oct 1, 2020 by jbrockmendel
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TRACKER: new default String dtype (pyarrow-backed, numpy NaN semantics) API Design Arrow pyarrow functionality Strings String extension data type and string data
#54792 opened Aug 28, 2023 by jorisvandenbossche
29 of 41 tasks
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BUG: to_datetime with mixed iso-str and ints Bug Constructors Series/DataFrame/Index/pd.array Constructors Datetime Datetime data dtype
#50721 opened Jan 12, 2023 by jbrockmendel
@MarcoGorelli
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API: IncompatibleFrequency should subclass TypeError API Design Error Reporting Incorrect or improved errors from pandas
#55782 opened Oct 31, 2023 by jbrockmendel
3 tasks done
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DEPR (PDEP-7/CoW): deprecate and remove copy keyword (except in constructors) Copy / view semantics Deprecate Functionality to remove in pandas
#56022 opened Nov 17, 2023 by jorisvandenbossche
@phofl
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BUG: AttributeError when rolling.agg use np.prod to calculate rolling product Bug Reduction Operations sum, mean, min, max, etc. Window rolling, ewma, expanding
#54203 opened Jul 20, 2023 by xythu
2 of 3 tasks
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ENH: switch to copy=False by default when DataFrame is constructed from dict of Series/Index for CoW Constructors Series/DataFrame/Index/pd.array Constructors Copy / view semantics Enhancement Needs Discussion Requires discussion from core team before further action
#52967 opened Apr 27, 2023 by phofl
1 of 3 tasks
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DEPR: object inference in to_stata Deprecate Functionality to remove in pandas IO Stata read_stata, to_stata Stale
#56536 opened Dec 17, 2023 by jbrockmendel Loading…
5 tasks
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DOC: Provide a public place for users to link to our documentation Docs
#55632 opened Oct 22, 2023 by phofl
1 task done
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ENH: Need new semantics for selecting parquet engine in Pandas 3 Blocked Deprecate Functionality to remove in pandas IO Parquet parquet, feather
#56642 opened Dec 27, 2023 by davetapley
1 of 3 tasks
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RLS: 3.0 Release
#57064 opened Jan 25, 2024 by datapythonista
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DEPR: pd.concat special cases DatetimeIndex to sort even when sort=False Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sorting e.g. sort_index, sort_values
#57335 opened Feb 10, 2024 by lukemanley
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BUG: Incompatible dype warning when assigning boolean series with logical indexer Bug Indexing Related to indexing on series/frames, not to indexes themselves PDEP6-related related to PDEP6 (not upcasting during setitem-like Series operations)
#57338 opened Feb 10, 2024 by m0nzderr
3 tasks done
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Deprecate future.no_silent_downcasting Deprecate Functionality to remove in pandas
#57403 opened Feb 13, 2024 by phofl
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BUG: FutureWarning when splitting a dataframe using np.split Blocker Blocking issue or pull request for an upcoming release Compat pandas objects compatability with Numpy or Python functions Deprecate Functionality to remove in pandas Regression Functionality that used to work in a prior pandas version
#57351 opened Feb 11, 2024 by amanlai
2 of 3 tasks
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BUG: groupby.agg should always agg API Design Apply Apply, Aggregate, Transform, Map Enhancement Groupby Needs Discussion Requires discussion from core team before further action
#57706 opened Mar 2, 2024 by rhshadrach Loading…
6 tasks done
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Potential regression induced by PR #56921 Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version Warnings Warnings that appear or should be added to pandas
#57641 opened Feb 27, 2024 by DeaMariaLeon
@rhshadrach
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API: Make Series.array a read-only NumpyExtensionEA when applicable Copy / view semantics
#58007 opened Mar 26, 2024 by mroeschke
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Potential regression induced by commit 924f246 Output-Formatting __repr__ of pandas objects, to_string Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version
#58285 opened Apr 17, 2024 by rhshadrach
3 tasks
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Potential regression induced by "Refactored pandas_timedelta_to_timedeltastruct" Needs Triage Issue that has not been reviewed by a pandas team member Performance Memory or execution speed performance Regression Functionality that used to work in a prior pandas version
#57951 opened Mar 21, 2024 by DeaMariaLeon
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API: timestamp resolution inference - default to one unit (if possible) instead of being data-dependent? Datetime Datetime data dtype Non-Nano datetime64/timedelta64 with non-nanosecond resolution Timestamp pd.Timestamp and associated methods
#58989 opened Jun 12, 2024 by jorisvandenbossche
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ENH/BUG: pd.date_range() still defaults to nanosecond resolution Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#59031 opened Jun 17, 2024 by jorisvandenbossche
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BUG/API: preserve dtype in Index append() Dtype Conversions Unexpected or buggy dtype conversions Index Related to the Index class or subclasses Strings String extension data type and string data
#60159 opened Oct 31, 2024 by jorisvandenbossche
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BUG: inferring the future string dtype doesn't work for pyarrow's "large_string" type Arrow pyarrow functionality Bug Strings String extension data type and string data
#54798 opened Aug 28, 2023 by jorisvandenbossche
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ENH: set __module__ on top-level public objects Enhancement Output-Formatting __repr__ of pandas objects, to_string
#55178 opened Sep 17, 2023 by jorisvandenbossche
5 of 11 tasks
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Change default string storage from "python" to "pyarrow" (if installed) for for NA-variant of StringDtype API Design NA - MaskedArrays Related to pd.NA and nullable extension arrays Strings String extension data type and string data
#60287 opened Nov 12, 2024 by jorisvandenbossche
BLD: Drop Python 3.10 support Build Library building on various platforms Dependencies Required and optional dependencies Python 3.10
#60059 opened Oct 16, 2024 by wirable23
2 tasks done
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DOC (string dtype): update user guide page "Working with text data" Docs Strings String extension data type and string data
#60348 opened Nov 17, 2024 by jorisvandenbossche
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@TEARFEAR
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BUG: pd.Timestamp() defaults to [s] resolution instead of [ns] Docs Non-Nano datetime64/timedelta64 with non-nanosecond resolution
#52653 opened Apr 13, 2023 by Rob-DL
2 of 3 tasks
@NumanIjaz
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TST (string dtype): clean-up interpolate tests Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Stale Strings String extension data type and string data Testing pandas testing functions or related to the test suite
#60653 opened Jan 3, 2025 by jorisvandenbossche Loading…
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BUG: groupby.agg with UDF changing pyarrow dtypes Bug Groupby pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result
#59601 opened Aug 25, 2024 by rhshadrach Loading…
5 tasks
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BUG: Added deprecation warning to Timestamp constructor Deprecate Functionality to remove in pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Timestamp pd.Timestamp and associated methods
#61149 opened Mar 20, 2025 by j-hendricks Loading…
1 of 5 tasks
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BUG: Preserve column names in DataFrame.from_records when nrows=0 Bug IO Data IO issues that don't fit into a more specific label
#61143 opened Mar 18, 2025 by kpvenkat47 Loading…
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TYP: Remove unused mypy ignores Typing type annotations, mypy/pyright type checking
#61330 opened Apr 21, 2025 by mroeschke Loading…