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BUG: DataFrame.to_string() creates extra space for string dtypes in pandas >=2.0

Bug

Output-Formatting__repr__ of pandas objects, to_string__repr__ of pandas objects, to_string

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

Status: Closed (completed).

#52690 In pandas-dev/pandas;

· by samuelchodur was closed on Jun 26, 2023

BUG: numpy.timedelta64[M] not properly raising in pandas.Timedelta in 2.0.0

Bug

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

Non-Nanodatetime64/timedelta64 with non-nanosecond resolutiondatetime64/timedelta64 with non-nanosecond resolution

Status: Closed (completed).

#52806 In pandas-dev/pandas;

· by ClaudioSalvatoreArcidiacono was closed on Jun 20, 2023

BUG: AttributeError: 'NoneType' object has no attribute 'is_first_col'

Bug

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Visualizationplottingplotting

Status: Closed (completed).

#53553 In pandas-dev/pandas;

· by set-leanix was closed on Jun 26, 2023

BUG: Reading fails when <code>dtype</code> is defined with <code>bool[pyarrow]</code>

Arrowpyarrow functionalitypyarrow functionality

Bug

IO CSVread_csv, to_csvread_csv, to_csv

Status: Closed (completed).

#53390 In pandas-dev/pandas;

· by LeonLuttenberger was closed on May 31, 2023

RLS: 2.0.3

Release

Status: Closed (completed).

#53430 In pandas-dev/pandas;

· by datapythonista was closed on Jun 29, 2023

BUG: <code>TestDataFrameSetItem.test_setitem_dtype[uint64]</code> and <code>TestSeriesNLargestNSmallest.test_nlargest_nullable[UInt8]</code> fail on aarch64

ARMaarch64 architectureaarch64 architecture

Unreliable TestUnit tests that occasionally failUnit tests that occasionally fail

Status: Closed (completed).

#53791 In pandas-dev/pandas;

· by ggardet was closed on Jun 26, 2023

Backport PR #53231 on branch 2.0.x (PERF: fix merging on datetimelike columns to not use object-dtype factorizer)

DatetimeDatetime data dtypeDatetime data dtype

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Merged (completed).

pandas-dev/pandasnumber 53471

#53471 In pandas-dev/pandas;

· by meeseeksmachine was closed on Jun 1, 2023

Backport PR #53391: BUG: read_csv with dtype=bool[pyarrow]

Arrowpyarrow functionalitypyarrow functionality

IO CSVread_csv, to_csvread_csv, to_csv

Status: Merged (completed).

pandas-dev/pandasnumber 53472

#53472 In pandas-dev/pandas;

· by mroeschke was closed on May 31, 2023

TST: fix import in test_hash_pandas_object extension test

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

Status: Merged (completed).

pandas-dev/pandasnumber 53474

#53474 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Jun 1, 2023

BUG: RangeIndex.union(sort=True) with another RangeIndex

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

setopsunion, intersection, difference, symmetric_differenceunion, intersection, difference, symmetric_difference

Status: Merged (completed).

pandas-dev/pandasnumber 53495

#53495 In pandas-dev/pandas;

· by mroeschke was closed on Jun 13, 2023

BUG: reindex with expansion and non-nanosecond dtype

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Non-Nanodatetime64/timedelta64 with non-nanosecond resolutiondatetime64/timedelta64 with non-nanosecond resolution

Status: Merged (completed).

pandas-dev/pandasnumber 53505

#53505 In pandas-dev/pandas;

· by mroeschke was closed on Jun 20, 2023

CI: Bump builds to 3.11, update numpy nightly wheels location

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 53508

#53508 In pandas-dev/pandas;

· by mroeschke was closed on Jun 6, 2023

Backport PR #53715: CI: Adjust tests for release of numpy 1.25

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 53716

#53716 In pandas-dev/pandas;

· by lithomas1 was closed on Jun 19, 2023

CI: ignore experimental warnings from numba

CIContinuous IntegrationContinuous Integration

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 53726

#53726 In pandas-dev/pandas;

· by MarcoGorelli was closed on Jun 19, 2023

CI: fix <code>pytest scripts</code>

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

Status: Merged (completed).

pandas-dev/pandasnumber 53727

#53727 In pandas-dev/pandas;

· by MarcoGorelli was closed on Jun 19, 2023

CI: fix numba typing

CIContinuous IntegrationContinuous Integration

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 53730

#53730 In pandas-dev/pandas;

· by MarcoGorelli was closed on Jun 20, 2023

CI: Adjust tests for release of numpy 1.25

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 53715

#53715 In pandas-dev/pandas;

· by lithomas1 was closed on Jun 18, 2023

REGR: Performance of DataFrame reduction ops with axis=1

PerformanceMemory or execution speed performanceMemory or execution speed performance

Reduction Operationssum, mean, min, max, etc.sum, mean, min, max, etc.

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

Stale

Status: Closed (abandoned).

pandas-dev/pandasnumber 52689

#52689 In pandas-dev/pandas;

· by rhshadrach was closed on May 27, 2023

Fix/mpl37 compat

Visualizationplottingplotting

Status: Merged (completed).

pandas-dev/pandasnumber 52150

#52150 In pandas-dev/pandas;

· by tacaswell was closed on Mar 24, 2023

fix documentation build error in basics.rst

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 53398

#53398 In pandas-dev/pandas;

· by DominikBerger01 was closed on May 30, 2023

PERF: fix merging on datetimelike columns to not use object-dtype factorizer

DatetimeDatetime data dtypeDatetime data dtype

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Merged (completed).

pandas-dev/pandasnumber 53231

#53231 In pandas-dev/pandas;

· by jorisvandenbossche was closed on May 31, 2023

DOC: Add release notes for pandas 2.0.3

Docs

Release

Status: Merged (completed).

pandas-dev/pandasnumber 53432

#53432 In pandas-dev/pandas;

· by datapythonista was closed on May 30, 2023

Backport PR #53434 on branch 2.0.x (Bump pypa/cibuildwheel from 2.12.3 to 2.13.0)

BuildLibrary building on various platformsLibrary building on various platforms

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Status: Merged (completed).

pandas-dev/pandasnumber 53457

#53457 In pandas-dev/pandas;

· by meeseeksmachine was closed on May 30, 2023

Backport PR #53398 on branch 2.0.x (fix documentation build error in basics.rst)

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 53456

#53456 In pandas-dev/pandas;

· by meeseeksmachine was closed on May 30, 2023

Backport PR #53432 on branch 2.0.x (DOC: Add release notes for pandas 2.0.3)

Docs

Release

Status: Merged (completed).

pandas-dev/pandasnumber 53454

#53454 In pandas-dev/pandas;

· by meeseeksmachine was closed on May 30, 2023