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BUG: fix fill value for gouped sum in case of unobserved categories for string dtype (empty string instead of 0)

Bug

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 61909

#61909 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jul 22, 2025

DOC: Add change in .values to the string migration guide

Docs

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

Status: Merged (completed).

pandas-dev/pandasnumber 62179

#62179 In pandas-dev/pandas;

· by rhshadrach was closed on Aug 26, 2025

Backport PR #62190: TST: Adjust test_round for Numpy 2.4 behavior

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 62193

#62193 In pandas-dev/pandas;

· by mroeschke was closed on Aug 26, 2025

TST: Adjust test_round for Numpy 2.4 behavior

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 62190

#62190 In pandas-dev/pandas;

· by mroeschke was closed on Aug 25, 2025

Backport PR #62179 on branch 2.3.x (DOC: Add change in .values to the string migration guide)

Docs

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

Status: Merged (completed).

pandas-dev/pandasnumber 62199

#62199 In pandas-dev/pandas;

· by meeseeksmachine was closed on Aug 26, 2025

ENH: support pathlib.Path division in StringArray

Status: Merged (completed).

pandas-dev/pandasnumber 62229

#62229 In pandas-dev/pandas;

· by jbrockmendel was closed on Sep 2, 2025

[backport 2.3.x] ENH: support pathlib.Path division in StringArray (#62229)

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

Status: Merged (completed).

pandas-dev/pandasnumber 62239

#62239 In pandas-dev/pandas;

· by jbrockmendel was closed on Sep 2, 2025

REGR: fix string contains/match methods with compiled regex with flags

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

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

Status: Merged (completed).

pandas-dev/pandasnumber 62251

#62251 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 5, 2025

[backport 2.3.x] BUG: fix fill value for gouped sum in case of unobserved categories for string dtype (empty string instead of 0) (#61909)

Status: Merged (completed).

pandas-dev/pandasnumber 61963

#61963 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 5, 2025

[backport 2.3.x] REGR: fix string contains/match methods with compiled regex with flags (#62251)

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

Status: Merged (completed).

pandas-dev/pandasnumber 62265

#62265 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 8, 2025

DOC: Add release notes template for 2.3.3

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 62257

#62257 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 5, 2025

BUG: Fix Memory Leak in to_json

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 62210

#62210 In pandas-dev/pandas;

· by Alvaro-Kothe was closed on Aug 28, 2025

BUG: fix memory leak in JSON datetime serialization

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Merged (completed).

pandas-dev/pandasnumber 62217

#62217 In pandas-dev/pandas;

· by Alvaro-Kothe was closed on Sep 3, 2025

Backport PR #62210 on branch 2.3.x (BUG: Fix Memory Leak in to_json)

Status: Merged (completed).

pandas-dev/pandasnumber 62250

#62250 In pandas-dev/pandas;

· by swt2c was closed on Sep 5, 2025

Backport PR #62257 on branch 2.3.x (DOC: Add release notes template for 2.3.3)

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 62258

#62258 In pandas-dev/pandas;

· by meeseeksmachine was closed on Sep 5, 2025

MNT: migrate from codecs.open to open

Python 3.14

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 62073

#62073 In pandas-dev/pandas;

· by ngoldbaum was closed on Aug 8, 2025

[backport 2.3.x] MNT: migrate from codecs.open to open (#62073)

Status: Merged (completed).

pandas-dev/pandasnumber 62325

#62325 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 12, 2025

BUG: fix pyarrow string regex replacement

Arrowpyarrow functionalitypyarrow functionality

Bug

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

Status: Merged (completed).

pandas-dev/pandasnumber 62283

#62283 In pandas-dev/pandas;

· by Alvaro-Kothe was closed on Sep 12, 2025

Backport PR #62283 on branch 2.3.x (BUG: fix pyarrow string regex replacement)

Arrowpyarrow functionalitypyarrow functionality

Bug

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

Status: Merged (completed).

pandas-dev/pandasnumber 62328

#62328 In pandas-dev/pandas;

· by meeseeksmachine was closed on Sep 13, 2025

[backport 2.3.x] String dtype: more informative repr (keeping brief __str__) (#61148)

Status: Merged (completed).

pandas-dev/pandasnumber 62329

#62329 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Sep 13, 2025

BUG: Using <code>/</code> operator with a <code>Path</code> and <code>Series</code> of string dtype fails

Enhancement

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

Status: Closed (completed).

#61940 In pandas-dev/pandas;

· by Dr-Irv was closed on Sep 2, 2025

BUG: memory leak in to_json when converting DateTime values

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Closed (completed).

#62204 In pandas-dev/pandas;

· by swt2c was closed on Aug 28, 2025

API: return value of <code>.values</code> for Series with the future string dtype (numpy array vs extension array)

API Design

Docs

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

Status: Closed (completed).

#60301 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Aug 26, 2025

BUG: .str.replace repl string incorrectly parsed with pyarrow string dtype

Arrowpyarrow functionalitypyarrow functionality

Bug

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

Status: Closed (completed).

#57636 In pandas-dev/pandas;

· by jamesmyatt was closed on Sep 12, 2025