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BUG: comparing strings of different dtypes errors in 2.3

Bug

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

Status: Closed (completed).

#61570 In pandas-dev/pandas;

· by a-reich was closed on Jul 2, 2025

BUG: StringDtype objects from pandas <2.3.0 cannot be reliably unpickled in 2.3.0.

Bug

IO Pickleread_pickle, to_pickleread_pickle, to_pickle

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

Status: Closed (completed).

#61763 In pandas-dev/pandas;

· by Liam3851 was closed on Jul 7, 2025

<code>pandas.__version__</code> is <code>2.3.0+4.g1dfc98e16a</code> in pandas 2.3.0 and python 3.9, not <code>2.3.0</code>

Bug

Status: Closed (completed).

#61579 In pandas-dev/pandas;

· by harupy was closed on Jul 7, 2025

DOC: https://pandas.pydata.org/pandas-docs/version/2.3 does not work

Docs

Webpandas websitepandas website

Status: Closed (completed).

#61721 In pandas-dev/pandas;

· by gaborbernat was closed on Jul 8, 2025

[backport 2.3.x] BUG(string dtype): groupby/resampler.min/max returns float on all NA strings (#60985)

Status: Merged (completed).

pandas-dev/pandasnumber 61633

#61633 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 12, 2025

[backport 2.3.x] ENH(string dtype): fallback for HDF5 with UTF-8 surrogates (#60993)

Status: Merged (completed).

pandas-dev/pandasnumber 61639

#61639 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 13, 2025

[2.3.x] CI: temporarily pin numpy to 2.2 until latest numexpr is available

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 61638

#61638 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 12, 2025

[backport 2.3.x] API: ignore empty range/object dtype in Index setop operations (string dtype compat) (#60797)

Status: Merged (completed).

pandas-dev/pandasnumber 60948

#60948 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 12, 2025

[backport 2.3.x] BUG(string dtype): Empty sum produces incorrect result (#60936)

Status: Merged (completed).

pandas-dev/pandasnumber 61625

#61625 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 12, 2025

TST: update xfail xarray version check in to_xarray test

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

Status: Merged (completed).

pandas-dev/pandasnumber 61648

#61648 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 13, 2025

CI: Fix slow mamba solver issue by limiting boto3 versions

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Status: Merged (completed).

pandas-dev/pandasnumber 61594

#61594 In pandas-dev/pandas;

· by datapythonista was closed on Jun 13, 2025

[backport 2.3.x] API (string dtype): implement hierarchy (NA &gt; NaN, pyarrow &gt; python) for consistent comparisons between different string dtypes (#61138)

Status: Merged (completed).

pandas-dev/pandasnumber 61649

#61649 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 13, 2025

[backport 2.3.x] TST: update xfail xarray version check in to_xarray test (#61648)

Status: Merged (completed).

pandas-dev/pandasnumber 61652

#61652 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 13, 2025

DOC: Add release notes template for 2.3.1

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 61654

#61654 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 19, 2025

Backport PR #61654 on branch 2.3.x (DOC: Add release notes template for 2.3.1)

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 61680

#61680 In pandas-dev/pandas;

· by meeseeksmachine was closed on Jun 20, 2025

BUG: DataFrame.explode fails with str dtype

Bug

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

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

Status: Merged (completed).

pandas-dev/pandasnumber 61623

#61623 In pandas-dev/pandas;

· by rhshadrach was closed on Jun 24, 2025

[backport 2.3.x] CI: Fix slow mamba solver issue by limiting boto3 version (#61594)

Status: Merged (completed).

pandas-dev/pandasnumber 61653

#61653 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 24, 2025

[backport 2.3.x] BUG: DataFrame.explode fails with str dtype (#61623)

Status: Merged (completed).

pandas-dev/pandasnumber 61699

#61699 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 24, 2025

DOC: Pin numpydoc=1.8.0

DependenciesRequired and optional dependenciesRequired and optional dependencies

Docs

Status: Closed (abandoned).

pandas-dev/pandasnumber 61725

#61725 In pandas-dev/pandas;

· by fangchenli was closed on Jun 30, 2025

CI: if no docstring, create error GL08 and don't validate - fix for numpydoc 1.9

CIContinuous IntegrationContinuous Integration

Code StyleCode style, linting, code_checksCode style, linting, code_checks

Status: Merged (completed).

pandas-dev/pandasnumber 61744

#61744 In pandas-dev/pandas;

· by Dr-Irv was closed on Jun 30, 2025

Backport PR #61744 on branch 2.3.x (CI: if no docstring, create error GL08 and don't validate - fix for numpydoc 1.9)

Status: Merged (completed).

pandas-dev/pandasnumber 61745

#61745 In pandas-dev/pandas;

· by Dr-Irv was closed on Jul 1, 2025

DOC: move relevant whatsnew changes from 2.3.0 to 2.3.1 file

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 61698

#61698 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 30, 2025

[backport 2.3.x] DOC: move relevant whatsnew changes from 2.3.0 to 2.3.1 file (#61698)

Status: Merged (completed).

pandas-dev/pandasnumber 61751

#61751 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jul 1, 2025

TST/CI: temporary upper pin for scipy in downstream tests for compat with statsmodels

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 61750

#61750 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jul 1, 2025

[backport 2.3.x] TST/CI: temporary upper pin for scipy in downstream tests for compat with statsmodels (#61750)

Status: Merged (completed).

pandas-dev/pandasnumber 61754

#61754 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jul 1, 2025