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Backport PR #55488 on branch 2.1.x (BLD: Pin numpy to < 2)

BuildLibrary building on various platformsLibrary building on various platforms

CIContinuous IntegrationContinuous Integration

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

Status: Merged (completed).

pandas-dev/pandasnumber 55500

#55500 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 13, 2023

BLD: Pin numpy to < 2

BuildLibrary building on various platformsLibrary building on various platforms

CIContinuous IntegrationContinuous Integration

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

Status: Merged (completed).

pandas-dev/pandasnumber 55488

#55488 In pandas-dev/pandas;

· by lithomas1 was closed on Oct 12, 2023

CoW: Use exponential backoff when clearing dead references

Copy / view semantics

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Merged (completed).

pandas-dev/pandasnumber 55518

#55518 In pandas-dev/pandas;

· by phofl was closed on Oct 22, 2023

BUG: value_counts returning incorrect dtype for string dtype

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diffNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 55627

#55627 In pandas-dev/pandas;

· by phofl was closed on Oct 25, 2023

BUG: Groupby not keeping string dtype for empty objects

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 55619

#55619 In pandas-dev/pandas;

· by phofl was closed on Oct 26, 2023

BUG: mode not sorting values for arrow backed strings

Arrowpyarrow functionalitypyarrow functionality

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

Status: Merged (completed).

pandas-dev/pandasnumber 55621

#55621 In pandas-dev/pandas;

· by phofl was closed on Oct 25, 2023

BUG: Ensure "string[pyarrow]" type is preserved when calling extractall

Arrowpyarrow functionalitypyarrow functionality

Bug

pyarrow dtype retentionop with pyarrow dtype -> expect pyarrow resultop with pyarrow dtype -> expect pyarrow result

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

Status: Merged (completed).

pandas-dev/pandasnumber 55534

#55534 In pandas-dev/pandas;

· by ABizzinotto was closed on Oct 19, 2023

Backport PR #55384 on branch 2.1.x (BUG: idxmax raising for arrow strings)

Status: Merged (completed).

pandas-dev/pandasnumber 55531

#55531 In pandas-dev/pandas;

· by phofl was closed on Oct 15, 2023

Backport PR #55337 on branch 2.1.x (DOC: Adjust user guide for CoW docs)

Copy / view semantics

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 55532

#55532 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 15, 2023

BUG fix deprecation of <code>limit</code> and <code>fill_method</code> in <code>pct_change</code>

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diffNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

Status: Merged (completed).

pandas-dev/pandasnumber 55527

#55527 In pandas-dev/pandas;

· by Charlie-XIAO was closed on Oct 26, 2023

MAINT: Partially revert <code>np.int_</code> changes

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

Status: Merged (completed).

pandas-dev/pandasnumber 55540

#55540 In pandas-dev/pandas;

· by mtsokol was closed on Oct 16, 2023

BUG: Series inferring new string dtype even if dtype is given for scalar value

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

Status: Merged (completed).

pandas-dev/pandasnumber 55537

#55537 In pandas-dev/pandas;

· by phofl was closed on Oct 22, 2023

Backport PR #55540 on branch 2.1.x (MAINT: Partially revert <code>np.int_</code> changes)

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

Status: Merged (completed).

pandas-dev/pandasnumber 55545

#55545 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 16, 2023

DOC: Move whatsnew in 2.1.2

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 55640

#55640 In pandas-dev/pandas;

· by phofl was closed on Oct 23, 2023

BUG: infer_string not inferring string dtype when NA is first value

Arrowpyarrow functionalitypyarrow functionality

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

Status: Merged (completed).

pandas-dev/pandasnumber 55655

#55655 In pandas-dev/pandas;

· by phofl was closed on Oct 24, 2023

CI: Unpin Cython

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Status: Merged (completed).

pandas-dev/pandasnumber 55582

#55582 In pandas-dev/pandas;

· by lithomas1 was closed on Oct 19, 2023

Backport PR #55562 on branch 2.1.x (Floordiv fix for pyarrow dtypes)

Arrowpyarrow functionalitypyarrow functionality

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

Status: Merged (completed).

pandas-dev/pandasnumber 55578

#55578 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 18, 2023

DEPR: correct warning message while parsing datetimes with mixed time zones if utc=False

TimezonesTimezone data dtypeTimezone data dtype

Status: Merged (completed).

pandas-dev/pandasnumber 55611

#55611 In pandas-dev/pandas;

· by natmokval was closed on Oct 20, 2023

CI: Have NumpyDev build only test nightly numpy

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 55596

#55596 In pandas-dev/pandas;

· by mroeschke was closed on Oct 19, 2023

Backport PR #55534 on branch 2.1.x (BUG: Ensure "string[pyarrow]" type is preserved when calling extractall)

Arrowpyarrow functionalitypyarrow functionality

Bug

pyarrow dtype retentionop with pyarrow dtype -> expect pyarrow resultop with pyarrow dtype -> expect pyarrow result

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

Status: Merged (completed).

pandas-dev/pandasnumber 55597

#55597 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 19, 2023

Backport PR #55611 on branch 2.1.x (DEPR: correct warning message while parsing datetimes with mixed time zones if utc=False)

TimezonesTimezone data dtypeTimezone data dtype

Status: Merged (completed).

pandas-dev/pandasnumber 55613

#55613 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 21, 2023

Backport PR #55537 on branch 2.1.x (BUG: Series inferring new string dtype even if dtype is given for scalar value)

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

Status: Merged (completed).

pandas-dev/pandasnumber 55635

#55635 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 22, 2023

Backport PR #55640 on branch 2.1.x (DOC: Move whatsnew in 2.1.2)

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 55641

#55641 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 23, 2023

Backport PR #55596 on branch 2.1.x (CI: Have NumpyDev build only test nightly numpy)

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 55602

#55602 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 20, 2023

Backport PR #55627 on branch 2.1.x (BUG: value_counts returning incorrect dtype for string dtype)

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diffNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 55682

#55682 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 25, 2023