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BUILD: Fails with meson 1.11.0

BuildLibrary building on various platformsLibrary building on various platforms

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

Status: Open.

#65252 In pandas-dev/pandas;

· michael-o opened on Apr 15, 2026

ENH: pd.crosstab with normalize='index' and margins=True drops the marginal 'Total' column.

Enhancement

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

Status: Open.

#65249 In pandas-dev/pandas;

· creilly94010 opened on Apr 15, 2026

BUG: read_csv() into FloatingArrays converts np.nan into pd.NA, even with distinguish_nan_and_na=True

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.

#65237 In pandas-dev/pandas;

· carlocastoldi opened on Apr 14, 2026

BUG: [REGRESSION] to_csv cannot handle FloatingArrays with np.nan, even with distinguish_nan_and_na=True

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.

#65227 In pandas-dev/pandas;

· carlocastoldi opened on Apr 14, 2026

operation 'add' not supported for dtype 'string[pyarrow]' with dtype 'str'

Bug

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

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

Status: Open.

#65220 In pandas-dev/pandas;

· MarcoGorelli opened on Apr 14, 2026

BUG: DataFrame.agg([...], numeric_only=True) returns NaN for non-numeric columns instead of excluding them

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

Bug

Status: Open.

#65218 In pandas-dev/pandas;

· gautamvarmadatla opened on Apr 13, 2026

API: Index.take discards fill_value and raises unnecessarily

Bug

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

Status: Open.

#65210 In pandas-dev/pandas;

· jbrockmendel opened on Apr 13, 2026

PERF: Specify how when calling merge._factorize_keys when possible

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Open.

#65160 In pandas-dev/pandas;

· rhshadrach opened on Apr 10, 2026

BUG: pd.to_timedelta ignores unit value for certain float values

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.

#65150 In pandas-dev/pandas;

· hagenw opened on Apr 10, 2026

BUG: Regression - df[key] = df[key] / x silently drops assignment on MultiIndex columns with mixed-dtype level and single sub-column

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.

#65118 In pandas-dev/pandas;

· aukeschaap opened on Apr 8, 2026

BUG: Regression when using .str[...] accessor on ArrowExtensionArray

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.

#65112 In pandas-dev/pandas;

· tehunter opened on Apr 7, 2026

BUG: ADBCDatabase does not escape SQL identifiers in delete_rows, read_table, and to_sql

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.

#65065 In pandas-dev/pandas;

· betoalien opened on Apr 4, 2026