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BUG: fillna with DataFrame input should preserve dtype when possible

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61742

#61742 In pandas-dev/pandas;

· iabhi4 opened on Jun 29, 2025

Raise MergeError on mismatched signed/unsigned int merge keys

Bug

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61694

#61694 In pandas-dev/pandas;

· RITAMIT2023 opened on Jun 23, 2025

feature #58141: Consistent naming conventions for string dtype aliases

API Design

Enhancement

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61651

#61651 In pandas-dev/pandas;

· pedromfdiogo opened on Jun 13, 2025

PDEP-18: Nullable Object Dtype

PDEPpandas enhancement proposalpandas enhancement proposal

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61599

#61599 In pandas-dev/pandas;

· simonjayhawkins opened on Jun 7, 2025

BUG: Fix Series.str.zfill for ArrowDtype string arrays #61485

Stale

StringsString extension data type and string dataString extension data type and string data

Status: Open (in progress).

pandas-dev/pandasnumber 61533

#61533 In pandas-dev/pandas;

· iabhi4 opened on Jun 1, 2025

API: Replace na_action parameter in Series/DataFrame/Index.map by the standard skipna

API Design

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61530

#61530 In pandas-dev/pandas;

· datapythonista opened on Jun 1, 2025

BUG: Fix assert_frame_equal dtype handling when check_dtype=False (#61473)

Stale

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Open (in progress).

pandas-dev/pandasnumber 61525

#61525 In pandas-dev/pandas;

· iabhi4 opened on May 31, 2025

BUG: Fixed issue where rolling.kurt() calculations would be effected by values outside of scope

Bug

Stale

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Open (in progress).

pandas-dev/pandasnumber 61481

#61481 In pandas-dev/pandas;

· eicchen opened on May 22, 2025

BUG: Raise ValueError on integer indexers containing NA; skip test for unsupported EAs(#56727)

Bug

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

Stale

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Open (in progress).

pandas-dev/pandasnumber 61465

#61465 In pandas-dev/pandas;

· pelagiavlas opened on May 20, 2025

ENH: Added <code>DataFrame.nsorted</code> to select top <code>n</code> rows according to column-dependent order

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61457

#61457 In pandas-dev/pandas;

· MartinBraquet opened on May 19, 2025

BUG: Raise TypeError when joining with non-DataFrame using 'on=' (GH#61434)

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61454

#61454 In pandas-dev/pandas;

· iabhi4 opened on May 18, 2025

ENH: Implemented MultiIndex.searchsorted method ( GH14833)

Enhancement

MultiIndex

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61435

#61435 In pandas-dev/pandas;

· GSAUC3 opened on May 12, 2025