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Issues list

BUG: ValueError: ndarray is not C-contiguous for cummax on nullable dtypes Bug Groupby NA - MaskedArrays Related to pd.NA and nullable extension arrays Transformations e.g. cumsum, diff, rank
#61031 opened Mar 2, 2025 by MarcoGorelli
3 tasks done
@rhshadrach
3
BUG: .map & .apply would convert element type for extension array. Apply Apply, Aggregate, Transform, Map Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays
#60766 opened Jan 22, 2025 by colinfang
2 of 3 tasks
2
@KevsterAmp
6
BUG: Series.mask incorrectly replaces positions of pd.NA in the cond argument Arrow pyarrow functionality Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays
#60729 opened Jan 18, 2025 by kartoria
3 tasks done
1
@sanggon6107
6
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 3.0
BUG: Boolean Series (actually object) with <NA> values breaks ~ negation and reverts to bit-wise operations Bug Closing Candidate May be closeable, needs more eyeballs Constructors Series/DataFrame/Index/pd.array Constructors NA - MaskedArrays Related to pd.NA and nullable extension arrays
#60049 opened Oct 15, 2024 by RedAero
3 tasks done
3
BUG: np.bool_(False) & pd.NA gives pd.NA Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Triage Issue that has not been reviewed by a pandas team member
#58427 opened Apr 25, 2024 by jbrockmendel
4
ENH: Infer column dtype when constructing object with pd.NA Dtype Conversions Unexpected or buggy dtype conversions Enhancement NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Discussion Requires discussion from core team before further action
#58366 opened Apr 22, 2024 by amanlai
1 of 3 tasks
2
What's the design decision regarding whether operations can return another backend's object? Arrow pyarrow functionality Dtype Conversions Unexpected or buggy dtype conversions NA - MaskedArrays Related to pd.NA and nullable extension arrays pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result Usage Question
#58312 opened Apr 18, 2024 by anmyachev
2
BUG: binop methods with fill_value not being respected in pandas 2.2 Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays Numeric Operations Arithmetic, Comparison, and Logical operations
#57447 opened Feb 16, 2024 by mroeschke
2
BUG: Identity checking NA in map is incorrect Arrow pyarrow functionality NA - MaskedArrays Related to pd.NA and nullable extension arrays Regression Functionality that used to work in a prior pandas version
#57390 opened Feb 13, 2024 by mroeschke
1
@droussea2001
4
ENH: bool upcast to Int64 Enhancement NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Discussion Requires discussion from core team before further action PDEP6-related related to PDEP6 (not upcasting during setitem-like Series operations)
#57298 opened Feb 7, 2024 by VladimirFokow
1 of 3 tasks
1
BUG: Series.map() coerces Int64Dtype and int64[pyarrow] series which contain missing values to float64 Arrow pyarrow functionality Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays
#57189 opened Jan 31, 2024 by weltenseglr
3 tasks done
@remiBoudreau
6
PERF: pd.BooleanDtype in row operations is still very slow NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Info Clarification about behavior needed to assess issue Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc.
#56903 opened Jan 16, 2024 by Alexia-I
2 of 3 tasks
10
BUG: Inconsistent behavior while constructing a Series with large integers in a int64 masked array Bug Constructors Series/DataFrame/Index/pd.array Constructors Dtype Conversions Unexpected or buggy dtype conversions NA - MaskedArrays Related to pd.NA and nullable extension arrays
#56566 opened Dec 19, 2023 by MridulS
3 tasks done
4
3
BUG: DataFrame([empty EA Series]) returns NAs with dtype object Bug Constructors Series/DataFrame/Index/pd.array Constructors DataFrame DataFrame data structure NA - MaskedArrays Related to pd.NA and nullable extension arrays
#56231 opened Nov 28, 2023 by mroeschke
3 tasks done
2
BUG: read_csv loses precision when engine='pyarrow' and dtype Int64 Arrow pyarrow functionality Bug IO CSV read_csv, to_csv NA - MaskedArrays Related to pd.NA and nullable extension arrays
#56136 opened Nov 23, 2023 by MarcoGorelli
3 tasks done
2
ENH: Docs IO Data IO issues that don't fit into a more specific label NA - MaskedArrays Related to pd.NA and nullable extension arrays
#55647 opened Oct 23, 2023 by jacgoldsm
1 of 3 tasks
1
3
BUG: pivot_table with EA dtype that cannot hold NA Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#55484 opened Oct 11, 2023 by jbrockmendel
BUG: Float64Dtype and isnull() functions unexpected behavior Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate NA - MaskedArrays Related to pd.NA and nullable extension arrays PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint
#53887 opened Jun 27, 2023 by jayantsahewal
3 tasks done
7
API/DEPR: pd.array don't cast numpy int/float/bool arrays to nullable API Design Constructors Series/DataFrame/Index/pd.array Constructors Deprecate Functionality to remove in pandas NA - MaskedArrays Related to pd.NA and nullable extension arrays Needs Discussion Requires discussion from core team before further action PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint
#53695 opened Jun 15, 2023 by jbrockmendel
2
BUG: NA value doesn't match mask condition, still masked Bug Conditionals E.g. where, mask, case_when NA - MaskedArrays Related to pd.NA and nullable extension arrays
#52955 opened Apr 27, 2023 by shobsi
3 tasks done
1
@Charlie-XIAO
6
BUG: clip raises when using extension array dtypes Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays
#52799 opened Apr 20, 2023 by bollard
2 of 3 tasks
1
1
BUG: describe does not distinguish between Int64 and int64 Bug ExtensionArray Extending pandas with custom dtypes or arrays. NA - MaskedArrays Related to pd.NA and nullable extension arrays Reduction Operations sum, mean, min, max, etc.
#52576 opened Apr 10, 2023 by phofl
3 tasks done
2
BUG: support decimal keyword for Float64Dtype in read_csv Bug Dtype Conversions Unexpected or buggy dtype conversions IO CSV read_csv, to_csv NA - MaskedArrays Related to pd.NA and nullable extension arrays
#52086 opened Mar 20, 2023 by RobbertDM
3 tasks done
1
@hxy450
2
ENH: Can pandas.Series.str.len returns a nullable pd.Int64Dtype rather than float64 Enhancement NA - MaskedArrays Related to pd.NA and nullable extension arrays Strings String extension data type and string data
#51948 opened Mar 13, 2023 by chelsea-lin
1 of 3 tasks
2
ProTip! What’s not been updated in a month: updated:<2025-04-18.