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RLS: 2.2.1

Release

Status: Closed (completed).

#57012 In pandas-dev/pandas;

· by lithomas1 was closed on Feb 23, 2024

BUG: unexpected results for <code>idxmax</code> groupby aggregation on uint column

Bug

Groupby

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

Status: Closed (completed).

#57040 In pandas-dev/pandas;

· by stress-tess was closed on Jan 26, 2024

BUG: pandas 2.2 read_csv(engine="c") leaks memory when code uses np.nan

Bug

IO CSVread_csv, to_csvread_csv, to_csv

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: Closed (completed).

#57039 In pandas-dev/pandas;

· by akrherz was closed on Jan 26, 2024

ENH: Add skipna to groupby.first and groupby.last

Enhancement

Groupby

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

Transformationse.g. cumsum, diff, ranke.g. cumsum, diff, rank

Status: Closed (completed).

#57019 In pandas-dev/pandas;

· by hsorsky was closed on Jan 30, 2024

BUG: merge_ordered fails with "left_indexer cannot be none" pandas 2.2.0

Bug

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

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

Status: Closed (completed).

#57010 In pandas-dev/pandas;

· by xmatthias was closed on Jan 22, 2024

BUG: to_numpy_dtype_inference returns None when array is non-numeric and dtype isn't given

Bug

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Closed (completed).

#56991 In pandas-dev/pandas;

· by derinwalters was closed on Feb 9, 2024

REGR/DOC: pd.concat(axis=1) should special case DatetimeIndex to sort even when sort=False

DatetimeDatetime data dtypeDatetime data dtype

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

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

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

Status: Closed (completed).

#57006 In pandas-dev/pandas;

· by torext was closed on Feb 9, 2024

BUG: Getting "Out of bounds on buffer access" error when .loc indexing a non-unique index with Int64 dtype

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

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

Status: Closed (completed).

#57027 In pandas-dev/pandas;

· by dalejung was closed on Jan 30, 2024

BUG: conversion from Int64 to string introduces decimals in Pandas 2.2.0

Arrowpyarrow functionalitypyarrow functionality

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

Status: Closed (completed).

#57418 In pandas-dev/pandas;

· by mplatzer was closed on Feb 20, 2024

BUG: Binary op with datetime offset is resulting in incorrect results

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Closed (completed).

#57529 In pandas-dev/pandas;

· by galipremsagar was closed on Feb 20, 2024

BUG: wrong future Warning on string assignment in certain condition

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

PDEP6-relatedrelated to PDEP6 (not upcasting during setitem-like Series operations)related to PDEP6 (not upcasting during setitem-like Series operations)

WarningsWarnings that appear or should be added to pandasWarnings that appear or should be added to pandas

Status: Closed (completed).

#56503 In pandas-dev/pandas;

· by xmatthias was closed on Feb 16, 2024

BUG: pandas.core.groupby.SeriesGroupBy.idxmax (and idxmin) - unexpected behavior with groups containing single NaN value

Bug

Duplicate ReportDuplicate issue or pull requestDuplicate issue or pull request

Groupby

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

Status: Closed (completed).

#57176 In pandas-dev/pandas;

· by semyonbok was closed on Jan 31, 2024

BUG: AssertionError calling df.shift(axis=1) on empty DataFrame

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

Bug

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

Status: Closed (completed).

#57301 In pandas-dev/pandas;

· by sfc-gh-joshi was closed on Feb 17, 2024

BUG: Regression from 2.1 -&gt; 2.2: df.to_dict produces int instead of timestamp

Bug

IO DataIO issues that don't fit into a more specific labelIO issues that don't fit into a more specific label

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

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

Status: Closed (completed).

#57125 In pandas-dev/pandas;

· by behrenhoff was closed on Jan 31, 2024

BUG: "ValueError: ndarray is not C-contiguous" when aggregating concatenated dataframe

Bug

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

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

Status: Closed (completed).

#57315 In pandas-dev/pandas;

· by zephyrai-niq was closed on Feb 18, 2024

BUG: Pandas 2.2: <code>Index.difference</code> regression with categoricals

Bug

CategoricalCategorical Data TypeCategorical Data Type

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

Status: Closed (completed).

#57318 In pandas-dev/pandas;

· by galipremsagar was closed on Feb 10, 2024

DOC: <code>is_interval</code> is deprecated, but not in the docs

BlockerBlocking issue or pull request for an upcoming releaseBlocking issue or pull request for an upcoming release

Docs

Status: Closed (completed).

#57382 In pandas-dev/pandas;

· by Dr-Irv was closed on Feb 19, 2024

BUG: Localizing Timestamp.min changes dtype to object

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

Status: Closed (completed).

#57150 In pandas-dev/pandas;

· by robert-schmidtke was closed on Feb 22, 2024

BUG: Stable sort on DatetimeIndex is not stable

Bug

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

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

Sortinge.g. sort_index, sort_valuese.g. sort_index, sort_values

Status: Closed (completed).

#57151 In pandas-dev/pandas;

· by robert-schmidtke was closed on Jan 31, 2024

BUG: Pyarrow dependency warning starts with newline which makes it impossible to filter out by message with -W or PYTHONWARNINGS

Arrowpyarrow functionalitypyarrow functionality

BlockerBlocking issue or pull request for an upcoming releaseBlocking issue or pull request for an upcoming release

Bug

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

WarningsWarnings that appear or should be added to pandasWarnings that appear or should be added to pandas

Status: Closed (completed).

#57082 In pandas-dev/pandas;

· by lesteve was closed on Feb 22, 2024

BUG: <code>DataFrame#to_json</code> in pandas 2.2.0 outputs <code>Int64</code> values containing <code>NA</code> as floats

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

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

Status: Closed (completed).

#57224 In pandas-dev/pandas;

· by skatsuta was closed on Feb 4, 2024

BUG: BlockManager.references_same_values not working with object-dtype block that has reference to an Index

Bug

Copy / view semantics

Status: Closed (completed).

#57276 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Feb 10, 2024

BUG: TypeError for dataframe arithmetic combining empty and mixed type column indexes

Bug

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

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

Status: Closed (completed).

#57048 In pandas-dev/pandas;

· by doraut was closed on Jan 29, 2024

BUG: df.str.match(pattern) fails with pd.options.future.infer_string = True with re.compile()

Arrowpyarrow functionalitypyarrow functionality

Bug

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: Closed (completed).

#57066 In pandas-dev/pandas;

· by ErichMarx was closed on Jan 28, 2024

BUG: testing.assert_series_equal: inferred check_exact should not be passed down to index check

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

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

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

Status: Closed (completed).

#57067 In pandas-dev/pandas;

· by crusaderky was closed on Feb 12, 2024