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DEPR/BUG: Do not ignore sort in concat for DatetimeIndex

Bug

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

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

Status: Open (in progress).

pandas-dev/pandasnumber 62843

#62843 In pandas-dev/pandas;

· rhshadrach opened on Oct 25, 2025

PERF: Assign unique for monotonic but not strictly monotonic index

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 62839

#62839 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 25, 2025

· 

3.0

DOC: Move whatsnew note for #58043 to v2.3.4

Docs

Status: Open (in progress).

pandas-dev/pandasnumber 62811

#62811 In pandas-dev/pandas;

· rhshadrach opened on Oct 23, 2025

· 

3.0

BUG: Do not ignore sort in concat for DatetimeIndex

DatetimeDatetime data dtypeDatetime data dtype

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

Status: Closed (abandoned).

pandas-dev/pandasnumber 62752

#62752 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 25, 2025

TYP: Remove custom ellipsis class

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 62737

#62737 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 18, 2025

· 

3.0

DOC: Set __module__ attributes and remove <code>core</code> from documentation

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 62727

#62727 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 19, 2025

TYP: Remove OutputFrameOrSeries

Groupby

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Closed (abandoned).

pandas-dev/pandasnumber 62683

#62683 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 13, 2025

DOC: Update Working with text data for 3.0

Docs

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

Status: Open (in progress).

pandas-dev/pandasnumber 62581

#62581 In pandas-dev/pandas;

· rhshadrach opened on Oct 4, 2025

CLN: Enforce deprecation of not validating na argument to string methods

Clean

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

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

Status: Merged (completed).

pandas-dev/pandasnumber 62399

#62399 In pandas-dev/pandas;

· by rhshadrach was closed on Oct 19, 2025

DEPR: Improve commenting around two deprecations

Docs

Status: Closed (abandoned).

pandas-dev/pandasnumber 62398

#62398 In pandas-dev/pandas;

· by rhshadrach was closed on Sep 29, 2025

· 

3.0

CLN: Enforce deprecation of PeriodIndex in resample

Status: Closed (abandoned).

pandas-dev/pandasnumber 62270

#62270 In pandas-dev/pandas;

· by rhshadrach was closed on Sep 6, 2025

CLN: Apply ruff format to scripts/

CIContinuous IntegrationContinuous Integration

Clean

Status: Merged (completed).

pandas-dev/pandasnumber 62269

#62269 In pandas-dev/pandas;

· by rhshadrach was closed on Sep 8, 2025

· 

3.0