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Issues: pandas-dev/pandas
FEEDBACK: PyArrow as a required dependency and PyArrow backed...
#54466 openedAug 9, 2023 byphofl
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Issues list
BUG(string dtype): Arithmetic operations between Series with string dtype index API - ConsistencyInternal Consistency of API/Behavior Bug Needs DiscussionRequires discussion from core team before further action StringsString extension data type and string data
#61425 openedMay 10, 2025 byrhshadrach
BUG: Inconsistent index type when using read_csv with string[pyarrow] dtype API - ConsistencyInternal Consistency of API/Behavior Bug IO CSVread_csv, to_csv Needs DiscussionRequires discussion from core team before further action
#61145 openedMar 19, 2025 byptth222
2 of 3 tasks
Improve the apply/map APIs API - ConsistencyInternal Consistency of API/Behavior API Design ApplyApply, Aggregate, Transform, Map Needs DiscussionRequires discussion from core team before further action
#61128 openedMar 15, 2025 bydatapythonista
BUG: inconsistent return types from __getitem__ vs iteration API - ConsistencyInternal Consistency of API/Behavior Bug Needs DiscussionRequires discussion from core team before further action
#60560 openedDec 13, 2024 bygboeing
3 tasks done
BUG:Internal Consistency of API/Behavior Bug Groupby Needs DiscussionRequires discussion from core team before further action
transform("cumcount") returns a Series instead of a Dataframe. API - Consistency #60551 openedDec 12, 2024 byClaudioSalvatoreArcidiacono
2 of 3 tasks
BUG?: usingInternal Consistency of API/Behavior Bug Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate replacereplace method
None as replacement value inreplace() typically upcasts to object dtype API - Consistency #60284 openedNov 12, 2024 byjorisvandenbossche
ERR: consistent error messages for unsupported setitem values API - ConsistencyInternal Consistency of API/Behavior Error ReportingIncorrect or improved errors from pandas IndexingRelated to indexing on series/frames, not to indexes themselves
#60218 openedNov 6, 2024 byjorisvandenbossche
BUG: user defined function does not work withInternal Consistency of API/Behavior Bug MultiIndex Needs DiscussionRequires discussion from core team before further action
DataFrame.apply API - Consistency #59908 openedSep 27, 2024 byshobsi
3 tasks done
API: handling of missing values in Index.__contains__ API - ConsistencyInternal Consistency of API/Behavior IndexRelated to the Index class or subclasses Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#59765 openedSep 9, 2024 byjorisvandenbossche 4.0
QST: DataFrame.plot() vs Series.plot() have inconsistency wrt reuse plot API - ConsistencyInternal Consistency of API/Behavior Needs DiscussionRequires discussion from core team before further action Usage Question Visualizationplotting
#59716 openedSep 5, 2024 bypollo-coder
2 tasks done
ERR: consistent error messages for unsupported reduction operations API - ConsistencyInternal Consistency of API/Behavior Error ReportingIncorrect or improved errors from pandas Reduction Operationssum, mean, min, max, etc.
#59580 openedAug 22, 2024 byjorisvandenbossche
BUG: inconsistent indices inInternal Consistency of API/Behavior Bug Groupby Windowrolling, ewma, expanding
GroupByRolling when selecting or not selecting subset of columns API - Consistency #59567 openedAug 20, 2024 byinigohidalgo
2 of 3 tasks
API: pd.StringDtype.value_counts should return pd.Int64Dtype API - ConsistencyInternal Consistency of API/Behavior API Design Arrowpyarrow functionality Dtype ConversionsUnexpected or buggy dtype conversions ExtensionArrayExtending pandas with custom dtypes or arrays.
#59346 openedJul 29, 2024 byWillAyd
1 of 3 tasks
DISC: Supporting numpy StringDType in Pandas API - ConsistencyInternal Consistency of API/Behavior API Design Compatpandas objects compatability with Numpy or Python functions Needs DiscussionRequires discussion from core team before further action StringsString extension data type and string data
#58503 openedMay 1, 2024 bylithomas1
BUG: DataFrameGroupBy.__getitem__ fails with tuples on multi-level column objects API - ConsistencyInternal Consistency of API/Behavior Bug Groupby IndexingRelated to indexing on series/frames, not to indexes themselves
#58282 openedApr 16, 2024 bytehunter
3 tasks done
BUG: API Inconsistency between numeric_only and select_dtypes(["number"]) API - ConsistencyInternal Consistency of API/Behavior Bug
#58210 openedApr 10, 2024 byWillAyd
3 tasks done
API: Consistently supportInternal Consistency of API/Behavior Groupby
numeric_only in groupby ops API - Consistency #56946 openedJan 18, 2024 byrhshadrach
17 tasks
BUG: Can't cast pyarrow floats to ints API - ConsistencyInternal Consistency of API/Behavior Arrowpyarrow functionality Astype
#56673 openedDec 29, 2023 bymattharrison
2 of 3 tasks
ENH: Add limit_area to groupby.ffill/bfill API - ConsistencyInternal Consistency of API/Behavior Enhancement Groupby Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs DiscussionRequires discussion from core team before further action
#56533 openedDec 17, 2023 byrhshadrach
BUG:Internal Consistency of API/Behavior Bug IndexingRelated to indexing on series/frames, not to indexes themselves inplaceRelating to inplace parameter or equivalent
.loc[:, 'a'] = is inplace when assigning Series, but not DataFrame API - Consistency #56223 openedNov 28, 2023 byMarcoGorelli
3 tasks done
API: dt64 resolution for PeriodIndex.to_timestamp API - ConsistencyInternal Consistency of API/Behavior IndexRelated to the Index class or subclasses PeriodPeriod data type Timestamppd.Timestamp and associated methods
#56164 openedNov 25, 2023 byjbrockmendel
REF/API/DEPR: _holds_integer checks in plotting API - ConsistencyInternal Consistency of API/Behavior DeprecateFunctionality to remove in pandas RefactorInternal refactoring of code Visualizationplotting
#55897 openedNov 9, 2023 byjbrockmendel
3 tasks done
API: be stricter in array_equivalent_object API - ConsistencyInternal Consistency of API/Behavior Numeric OperationsArithmetic, Comparison, and Logical operations
#55492 openedOct 11, 2023 byjbrockmendel
REF/API: EA formatting methods API - ConsistencyInternal Consistency of API/Behavior RefactorInternal refactoring of code
#55426 openedOct 6, 2023 byjbrockmendel
set allowed forindex argument inSeries,index andcolumns forDataFrame.from_records() API - Consistency #55425 openedOct 6, 2023 byDr-Irv
ProTip! What’s not been updated in a month:updated:<2025-04-23.