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groupby boxplot doesn't work if multiple by's are used

Bug

Groupby

MultiIndex

Visualizationplottingplotting

Status: Closed (completed).

#14701 In pandas-dev/pandas;

· by languitar was closed on Mar 31, 2024

read_json reads large integers as strings incorrectly if dtype not explicitly mentioned

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Closed (completed).

#20608 In pandas-dev/pandas;

· by Udayraj123 was closed on Sep 24, 2024

BUG: Series.argsort() incorrect handling of NaNs

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

Bug

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

Status: Closed (completed).

#12694 In pandas-dev/pandas;

· by seth-p was closed on Jun 26, 2024

Support axis=None in all reductions

Enhancement

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

Status: Closed (completed).

#21597 In pandas-dev/pandas;

· by TomAugspurger was closed on May 25, 2023

BUG: <code>len(df.groupby(..., dropna=False))</code> raises ValueError: Categorical categories cannot be null

Bug

good first issue

Groupby

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

Status: Closed (completed).

#35202 In pandas-dev/pandas;

· by ssche was closed on Feb 28, 2025

API: Default to stdlib timezone objects instead of pytz

API Design

TimezonesTimezone data dtypeTimezone data dtype

Status: Closed (completed).

#34916 In pandas-dev/pandas;

· by jbrockmendel was closed on Aug 12, 2024

ENH: re-implement DataFrame.lookup.

Enhancement

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

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

Status: Closed (completed).

#40140 In pandas-dev/pandas;

· by erfannariman was closed on May 29, 2025

REF: Series.argsort should dispatch to EA.argsort

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

RefactorInternal refactoring of codeInternal refactoring of code

Status: Closed (completed).

#43840 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 26, 2024

BUG: Hexbin plots does not display x label and xtick labels in pandas 1.3.3

Bug

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

Visualizationplottingplotting

Status: Closed (completed).

#44050 In pandas-dev/pandas;

· by stelios-c was closed on Nov 12, 2024

BUG: Incompatible dype warning when assigning boolean series with logical indexer

Bug

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

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

Status: Closed (completed).

#57338 In pandas-dev/pandas;

· by m0nzderr was closed on Jul 1, 2025

ENH: Allow different <code>dtype</code> in <code>pandas.Series.str.get_dummies</code>

Enhancement

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Closed (completed).

#47872 In pandas-dev/pandas;

· by JeffersonQin was closed on Sep 9, 2024

BUG: series.astype(str) vs Index.astype(str) inconsistency

Astype

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Status: Closed (completed).

#45326 In pandas-dev/pandas;

· by jbrockmendel was closed on Feb 15, 2023

BUG: loc[] returns object type instead of float

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

Status: Closed (completed).

#60600 In pandas-dev/pandas;

· by metazoic was closed on Jun 30, 2025

<code>pyarrow</code> uses <code>is_sparse()</code>, which is deprecated in development code, causing warnings on I/O routines with pandas

Arrowpyarrow functionalitypyarrow functionality

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

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

Status: Closed (completed).

#52899 In pandas-dev/pandas;

· by Dr-Irv was closed on Dec 28, 2023

WEB: Better management of releases in the pandas home page

good first issue

Webpandas websitepandas website

Status: Closed (completed).

#50885 In pandas-dev/pandas;

· by datapythonista was closed on Dec 13, 2023

ENH: Allow dictionaries to be passed to pandas.Series.str.replace

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

API Design

Enhancement

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

Status: Closed (completed).

#51748 In pandas-dev/pandas;

· by lukefeilberg was closed on Feb 12, 2024

CI: pyarrow 11 broke ci

Arrowpyarrow functionalitypyarrow functionality

CIContinuous IntegrationContinuous Integration

Status: Closed (completed).

#51146 In pandas-dev/pandas;

· by phofl was closed on Feb 10, 2023

BUG: to_datetime with mixed iso-str and ints

Bug

ConstructorsSeries/DataFrame/Index/pd.array ConstructorsSeries/DataFrame/Index/pd.array Constructors

DatetimeDatetime data dtypeDatetime data dtype

Status: Closed (completed).

#50721 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 2, 2025

BUG: pandas 1.5.2 segfault with pypy 3.9-7.3.11

Bug

PyPy

SegfaultNon-Recoverable ErrorNon-Recoverable Error

Status: Closed (completed).

#50817 In pandas-dev/pandas;

· by nicolaerosia was closed on Nov 10, 2023

BUG: <code>Series.isnull()</code> and <code>DataFrame.isnull()</code> do not respect <code>use_inf_as_na</code> option

Bug

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

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).

#50495 In pandas-dev/pandas;

· by jborman-exos was closed on Feb 14, 2024

REF: Proposal: change <code>DataFrame.to_excel</code> to output unformatted excel file

IO Excelread_excel, to_excelread_excel, to_excel

RefactorInternal refactoring of codeInternal refactoring of code

Status: Closed (completed).

#54154 In pandas-dev/pandas;

· by attack68 was closed on Feb 15, 2024

BUG: <code>AttributeError</code> when <code>rolling.agg</code> use <code>np.prod</code> to calculate rolling product

Bug

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

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Closed (completed).

#54203 In pandas-dev/pandas;

· by xythu was closed on Jun 2, 2025

DOC: Adding new columns in a DataFrame of Nullable type might be better explained

Docs

good first issue

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

Status: Closed (completed).

#49201 In pandas-dev/pandas;

· by killerrex was closed on Jun 6, 2024

ENH: Expose <code>to_pandas_kwargs</code> in <code>read_parquet</code> for pyarrow engine

Arrowpyarrow functionalitypyarrow functionality

Enhancement

good first issue

IO Parquetparquet, featherparquet, feather

Status: Closed (completed).

#49236 In pandas-dev/pandas;

· by TomAugspurger was closed on Nov 21, 2024

BUG: Interchange object data buffer has the wrong dtype / <code>from_dataframe</code> incorrect

Bug

InterchangeDataframe Interchange ProtocolDataframe Interchange Protocol

Status: Closed (completed).

#54781 In pandas-dev/pandas;

· by stinodego was closed on Feb 23, 2024