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BUG / ENH: Implement groupby_helper funcs for int

API - ConsistencyInternal Consistency of API/BehaviorInternal Consistency of API/Behavior

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

good first issue

Groupby

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

Status: Closed (completed).

#16676 In pandas-dev/pandas;

· by gfyoung was closed on Aug 2, 2023

groupby.nth with dropna is buggy

Bug

Filterse.g. head, tail, nthe.g. head, tail, nth

Groupby

Needs TestsUnit test(s) needed to prevent regressionsUnit test(s) needed to prevent regressions

Status: Closed (completed).

#11038 In pandas-dev/pandas;

· by behzadnouri was closed on Jun 5, 2023

Groupby on single key should be accessible by tuple of length 1

Bug

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

Status: Closed (completed).

#25971 In pandas-dev/pandas;

· by KeithWM was closed on Aug 21, 2023

pd.core.groupby.groupby.DataFrameGroupBy.nth yielding false values with Interval MultiIndex Interval

Filterse.g. head, tail, nthe.g. head, tail, nth

good first issue

Groupby

Needs TestsUnit test(s) needed to prevent regressionsUnit test(s) needed to prevent regressions

Status: Closed (completed).

#24205 In pandas-dev/pandas;

· by JoElfner was closed on Apr 29, 2023

DEPR: Deprecate downcast keyword for fillna

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

Status: Closed (completed).

#40988 In pandas-dev/pandas;

· by phofl was closed on Jun 29, 2023

ENH: pd.Series.shift and .diff to accept a collection of numbers

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

Enhancement

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

Status: Closed (completed).

#44424 In pandas-dev/pandas;

· by jona-sassenhagen was closed on Jul 28, 2023

BUG: groupby.rolling.corr incorrect/fails when grouping columns contain tuples

cov/corr

Groupby

Needs TestsUnit test(s) needed to prevent regressionsUnit test(s) needed to prevent regressions

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Closed (completed).

#44078 In pandas-dev/pandas;

· by rhshadrach was closed on Aug 11, 2023

BUG: series created from pyarrow array with date32 type in 1.5rc0 can be created but not displayed

Arrowpyarrow functionalitypyarrow functionality

Needs TestsUnit test(s) needed to prevent regressionsUnit test(s) needed to prevent regressions

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

Status: Closed (completed).

#48238 In pandas-dev/pandas;

· by a-reich was closed on Apr 21, 2023

DOC: missed behavior explaination of sort=False for groupby

Docs

Groupby

Status: Closed (completed).

#47529 In pandas-dev/pandas;

· by easysam was closed on Apr 21, 2023

CI: pydata sphinx theme 0.11 broke doc build

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Docs

Status: Closed (completed).

#48988 In pandas-dev/pandas;

· by phofl was closed on May 11, 2023

PERF: GroupBy.quantile

Groupby

PerformanceMemory or execution speed performanceMemory or execution speed performance

quantilequantile methodquantile method

Status: Closed (completed).

#51385 In pandas-dev/pandas;

· by jbrockmendel was closed on Aug 1, 2023

REF: de-duplicate iterate_slices

Clean

Groupby

InternalsRelated to non-user accessible pandas implementationRelated to non-user accessible pandas implementation

Status: Closed (completed).

#51186 In pandas-dev/pandas;

· by jbrockmendel was closed on Feb 24, 2023

DEPR: DataFrame.groupby(axis=1)

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

Status: Closed (completed).

#51203 In pandas-dev/pandas;

· by jbrockmendel was closed on Mar 4, 2023

API: quantile with bool/boolean dtypes

API Design

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

quantilequantile methodquantile method

Status: Closed (completed).

#51424 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 5, 2023

PERF: pd.BooleanDtype in row operations is 2000000 times slower

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

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

Status: Closed (completed).

#52016 In pandas-dev/pandas;

· by leaver2000 was closed on Aug 13, 2023

BUG: <code>KeyError: '[nan] not in index'</code> when using <code>nan</code> to index

Bug

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

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

Status: Closed (completed).

#52234 In pandas-dev/pandas;

· by ssche was closed on Jun 23, 2023

DOC: broken link in user guide/style

Docs

good first issue

Webpandas websitepandas website

Status: Closed (completed).

#52157 In pandas-dev/pandas;

· by phlummox was closed on Mar 30, 2023

DEPR: Deprecate returning a DataFrame in Series.apply

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

SeriesSeries data structureSeries data structure

Status: Closed (completed).

#52116 In pandas-dev/pandas;

· by topper-123 was closed on Apr 7, 2023

BUG: Groupby mean differs depending on where <code>np.inf</code> value was introduced

Bug

Groupby

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

Status: Closed (completed).

#50367 In pandas-dev/pandas;

· by ncclementi was closed on May 23, 2023

DEPR: axis argument in groupby ops

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

Status: Closed (completed).

#50405 In pandas-dev/pandas;

· by rhshadrach was closed on Mar 17, 2023

BUG: error when unstacking in DataFrame.groupby.apply

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

Groupby

Status: Closed (completed).

#52444 In pandas-dev/pandas;

· by topper-123 was closed on Apr 6, 2023

API: rename DataFrame.applymap -&gt; DataFrame.map

API Design

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Status: Closed (completed).

#52353 In pandas-dev/pandas;

· by topper-123 was closed on Apr 16, 2023

BUG: Index.sort_values with key

Bug

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

Status: Closed (completed).

#52764 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 21, 2023

DOC: Minor typo and punctuation error

Docs

Status: Closed (completed).

#53596 In pandas-dev/pandas;

· by kyunghei was closed on Jun 11, 2023

BUG: DataFrame.stack sorting index values in rare cases

Bug

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

Status: Closed (completed).

#53824 In pandas-dev/pandas;

· by rhshadrach was closed on Jun 28, 2023