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BUG: pd.read_csv() works on MacOS with either file or StringIO

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.

#62660 In pandas-dev/pandas;

· thmsklngr opened on Oct 11, 2025

ENH: multi slice in loc

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.

#62659 In pandas-dev/pandas;

· tocr83 opened on Oct 11, 2025

BUG: Series.str.replace stopped working with regex groups

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.

#62653 In pandas-dev/pandas;

· worc4021 opened on Oct 11, 2025

ENH: : Add header Autofilter and optional bold via engine_kwargs in to_excel

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.

#62651 In pandas-dev/pandas;

· antznette1 opened on Oct 11, 2025

DOC: Index.where(..., other) other could be a Series/Index but not documented as such

Docs

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

Status: Open.

#62646 In pandas-dev/pandas;

· loicdiridollou opened on Oct 10, 2025

BUG: read_csv with pyarrow engine cannot handle single-line CSV files

Arrowpyarrow functionalitypyarrow functionality

Bug

IO CSVread_csv, to_csvread_csv, to_csv

Status: Open.

#62635 In pandas-dev/pandas;

· jorisvandenbossche opened on Oct 9, 2025

CI: New python-dev build causes errors in test-cases

CIContinuous IntegrationContinuous Integration

Status: Open.

#62629 In pandas-dev/pandas;

· eicchen opened on Oct 8, 2025

BUG: incorrect string parsing leads to segfault

Bug

IO CSVread_csv, to_csvread_csv, to_csv

SegfaultNon-Recoverable ErrorNon-Recoverable Error

Status: Open.

#62617 In pandas-dev/pandas;

· leolavaur opened on Oct 7, 2025

BUG: Drop duplicates bug when using pyarrow (version 21.0.0) backend

Arrowpyarrow functionalitypyarrow functionality

Bug

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

duplicatedduplicated, drop_duplicatesduplicated, drop_duplicates

Status: Open.

#62611 In pandas-dev/pandas;

· flori-ko opened on Oct 7, 2025

BUG: <code>pandas.date_range()</code> raises <code>NonExistentTimeError</code> despite <code>nonexistent="shift_forward"</code> when crossing DST boundaries

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.

#62602 In pandas-dev/pandas;

· msobhyy10 opened on Oct 6, 2025

BUG: <code>DataFrame.resample()</code> fails across DST transitions with <code>NonExistentTimeError</code> in timezone-aware data

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.

#62601 In pandas-dev/pandas;

· msobhyy10 opened on Oct 6, 2025

BUG: Multiplying a series of strings with a boolean different for arrow vs. python

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.

#62595 In pandas-dev/pandas;

· Dr-Irv opened on Oct 6, 2025

· 

3.0