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BUG: str.match and str.contains behave inconsistently on compiled regexps (regression in 2.3.2 relative to 2.3.1)

API - ConsistencyInternal Consistency of API/Behavior Internal Consistency of API/Behavior

Bug

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

StringsString extension data type and string data String extension data type and string data

Status: Open.

#62240 In pandas-dev/pandas;

· sam-s opened on Sep 2, 2025

·

2.3.3

REF/API: Move ArrowDtype(pa.foo_string()) into StringDtype(...)

API Design

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

StringsString extension data type and string data String extension data type and string data

Status: Open.

#62129 In pandas-dev/pandas;

· jbrockmendel opened on Aug 16, 2025

BUG: <code>metadata</code> on <code>np.ndarray</code> of <code>np.dtype("O")</code> dtype lost when roundtripped through <code>pandas.Series</code>

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61938 In pandas-dev/pandas;

· ilan-gold opened on Jul 24, 2025

String dtype: backwards compatibility of selecting "object" vs "str" columns in <code>select_dtypes</code>

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61916 In pandas-dev/pandas;

· jorisvandenbossche opened on Jul 21, 2025

·

2.3.3

BUG: Passing string[pyarrow] to the dtype parameter of e.g. csv_read() does produce a string type Series

Arrowpyarrow functionality pyarrow functionality

Dtype ConversionsUnexpected or buggy dtype conversions Unexpected or buggy dtype conversions

IO CSVread_csv, to_csv read_csv, to_csv

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

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61496 In pandas-dev/pandas;

· ClauPet opened on May 26, 2025

BUG: Series.str.isdigit with pyarrow dtype doesn't honor unicode superscripts

Arrowpyarrow functionality pyarrow functionality

Bug

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

StringsString extension data type and string data String extension data type and string data

Upstream issueIssue related to pandas dependency Issue related to pandas dependency

Status: Open.

#61466 In pandas-dev/pandas;

· GarrettWu opened on May 20, 2025

·

2.3.3

BUG: documented usage of of <code>str.split(...).str.get</code> fails on dtype <code>large_string[pyarrow]</code>

Bug

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

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61431 In pandas-dev/pandas;

· SandroCasagrande opened on May 12, 2025

BUG(string dtype): Arithmetic operations between Series with string dtype index

API - ConsistencyInternal Consistency of API/Behavior Internal Consistency of API/Behavior

Bug

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

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61425 In pandas-dev/pandas;

· rhshadrach opened on May 10, 2025

BUG: str.fullmatch behavior is not the same for object dtype and string[pyarrow] dtype

Arrowpyarrow functionality pyarrow functionality

Bug

StringsString extension data type and string data String extension data type and string data

Status: Open.

#61072 In pandas-dev/pandas;

· ptth222 opened on Mar 7, 2025

BUG: <code>.str.contains()</code> regex lookbehind and lookahead fail for data type <code>string[pyarrow]</code>

Arrowpyarrow functionality pyarrow functionality

Bug

StringsString extension data type and string data String extension data type and string data

Status: Open.

#60833 In pandas-dev/pandas;

· noahblakesmith opened on Feb 3, 2025

DOC (string dtype): update user guide page "Working with text data"

Docs

StringsString extension data type and string data String extension data type and string data

Status: Open.

#60348 In pandas-dev/pandas;

· jorisvandenbossche opened on Nov 17, 2024

·

3.0

Change default string storage from "python" to "pyarrow" (if installed) for for NA-variant of StringDtype

API Design

NA - MaskedArraysRelated to pd.NA and nullable extension arrays Related to pd.NA and nullable extension arrays

StringsString extension data type and string data String extension data type and string data

Status: Open.

#60287 In pandas-dev/pandas;

· jorisvandenbossche opened on Nov 12, 2024

·

3.0