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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

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

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

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

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

API: Add pandas.api.typing

API Design

Enhancement

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Closed (completed).

#48577 In pandas-dev/pandas;

· by rhshadrach was closed on Apr 17, 2023

BUG: <code>.loc</code>/<code>.iloc</code>/<code>.at</code>/<code>iat</code> setitem coerces a pd.Series to np.ndarray with object dtype

Bug

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

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

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

Status: Closed (completed).

#48933 In pandas-dev/pandas;

· by rosagold was closed on Aug 25, 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

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

Release 2.1

Release

Status: Closed (completed).

#53047 In pandas-dev/pandas;

· by phofl was closed on Aug 31, 2023

BUG: DataFrameGroupBy.agg with lists doesn't respect as_index=False

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

Bug

Groupby

Status: Closed (completed).

#52849 In pandas-dev/pandas;

· by rhshadrach was closed on May 22, 2023

DOC: Series.dt currently not included in docs on main

DependenciesRequired and optional dependenciesRequired and optional dependencies

Docs

Status: Closed (completed).

#52937 In pandas-dev/pandas;

· by phofl was closed on Aug 22, 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

BUG: Inconsistency in <code>groupby</code> with multi-index

Bug

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

MultiIndex

Status: Closed (completed).

#51583 In pandas-dev/pandas;

· by erezinman was closed on Mar 18, 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

DEPR: NDFrame.bool

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Status: Closed (completed).

#51749 In pandas-dev/pandas;

· by jbrockmendel was closed on Apr 2, 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

BLD: Wheels/sdist built by meson are too big

Blocker for rcBlocking issue or pull request for release candidateBlocking issue or pull request for release candidate

BuildLibrary building on various platformsLibrary building on various platforms

Status: Closed (completed).

#53224 In pandas-dev/pandas;

· by lithomas1 was closed on Jul 31, 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

DEPR: GroupBy.cumsum etc with axis=1

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Groupby

Status: Closed (completed).

#51046 In pandas-dev/pandas;

· by jbrockmendel was closed on Mar 17, 2023

BUG: GroupBy.idxmin/idxmax returns wrong dtype on empty Series/DataFrame

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Groupby

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

Status: Closed (completed).

#50993 In pandas-dev/pandas;

· by plutonium-94 was closed on Feb 25, 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