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BUG: read_html parses nested table incorrectly when using html5lib or bs4 flavors

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64524 In pandas-dev/pandas;

· fumoboy007 opened on Mar 11, 2026

BUG: Assigning pd.NA to ArrowStringArray after 3-way slice concat silently corrupts other rows

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64511 In pandas-dev/pandas;

· jamaggs opened on Mar 10, 2026

·  

3.0.2

DEPR: deprecate set_eng_float_format

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Output-Formatting__repr__ of pandas objects, to_string__repr__ of pandas objects, to_string

Status: Open.

#64460 In pandas-dev/pandas;

· jbrockmendel opened on Mar 7, 2026

DOC: Fix incorrect Sphinx cross references in older, whatsnew restructred text files.

Docs

Status: Open.

#64458 In pandas-dev/pandas;

· mroeschke opened on Mar 7, 2026

Add ARM64 (AArch64) benchmark coverage (ASV runner) to monitor perf regressions and gaps (incl. Kunpeng)

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#64454 In pandas-dev/pandas;

· 113xiaoji opened on Mar 7, 2026

API: Add reduction methods to ExtensionArray subclasses

API Design

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

Status: Open.

#64450 In pandas-dev/pandas;

· rhshadrach opened on Mar 7, 2026

PERF: Avoid intermediate ndarray[object] array when constructing a pyarrow-backed string data from untyped data

Arrowpyarrow functionalitypyarrow functionality

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Open.

#64429 In pandas-dev/pandas;

· mroeschke opened on Mar 6, 2026

BUG: DataFrame.div() ignores axis

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64428 In pandas-dev/pandas;

· torext opened on Mar 6, 2026

DEPR: float_precision in read_csv

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

IO CSVread_csv, to_csvread_csv, to_csv

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#64395 In pandas-dev/pandas;

· jbrockmendel opened on Mar 5, 2026

BUG: error when summing string to pa.large_string-backed Series

Arrowpyarrow functionalitypyarrow functionality

Bug

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

Status: Open.

#64393 In pandas-dev/pandas;

· MarcoGorelli opened on Mar 4, 2026

BUG: eval not working with string containment

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64391 In pandas-dev/pandas;

· moi90 opened on Mar 4, 2026

BUG: DataFrame.sort_index does fails with AssertionError

Bug

Sortinge.g. sort_index, sort_valuese.g. sort_index, sort_values

Status: Open.

#64383 In pandas-dev/pandas;

· johannes-mueller opened on Mar 3, 2026

·  

3.0.2