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3.0

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Last updated Jun 5, 2025
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0 issues of 1810 selected

  • BUG: Series.argsort() incorrect handling of NaNs

    AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff
    Bug
    Missing-datanp.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

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

    Bug
    Groupby
    MultiIndex
    Visualizationplotting
    Status: Closed (completed).
    #14701 In pandas-dev/pandas;
    · by languitar was closed on Mar 31, 2024

  • API: Default to stdlib timezone objects instead of pytz

    API Design
    TimezonesTimezone data dtype
    Status: Closed (completed).
    #34916 In pandas-dev/pandas;
    · by jbrockmendel was closed on Aug 12, 2024

  • 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 regressions
    Status: Closed (completed).
    #35202 In pandas-dev/pandas;
    · by ssche was closed on Feb 28, 2025

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

    Bug
    IO JSONread_json, to_json, json_normalize
    Status: Closed (completed).
    #20608 In pandas-dev/pandas;
    · by Udayraj123 was closed on Sep 24, 2024

  • Support axis=None in all reductions

    Enhancement
    Reduction Operationssum, mean, min, max, etc.
    Status: Closed (completed).
    #21597 In pandas-dev/pandas;
    · by TomAugspurger was closed on May 25, 2023

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

    Enhancement
    PerformanceMemory or execution speed performance
    StringsString extension data type and string data
    Status: Closed (completed).
    #47872 In pandas-dev/pandas;
    · by JeffersonQin was closed on Sep 9, 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 regressions
    Visualizationplotting
    Status: Closed (completed).
    #44050 In pandas-dev/pandas;
    · by stelios-c was closed on Nov 12, 2024

  • REF: Series.argsort should dispatch to EA.argsort

    ExtensionArrayExtending pandas with custom dtypes or arrays.
    RefactorInternal refactoring of code
    Status: Closed (completed).
    #43840 In pandas-dev/pandas;
    · by jbrockmendel was closed on Jun 26, 2024

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

    Astype
    Bug
    Dtype ConversionsUnexpected or buggy dtype conversions
    Status: Closed (completed).
    #45326 In pandas-dev/pandas;
    · by jbrockmendel was closed on Feb 15, 2023

  • WEB: Better management of releases in the pandas home page

    good first issue
    Webpandas website
    Status: Closed (completed).
    #50885 In pandas-dev/pandas;
    · by datapythonista was closed on Dec 13, 2023

  • BUG: pandas 1.5.2 segfault with pypy 3.9-7.3.11

    Bug
    PyPy
    SegfaultNon-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, interpolate
    Needs TriageIssue 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

  • CI: pyarrow 11 broke ci

    Arrowpyarrow functionality
    CIContinuous Integration
    Status: Closed (completed).
    #51146 In pandas-dev/pandas;
    · by phofl was closed on Feb 10, 2023

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

    IO Excelread_excel, to_excel
    RefactorInternal refactoring of code
    Status: Closed (completed).
    #54154 In pandas-dev/pandas;
    · by attack68 was closed on Feb 15, 2024

  • 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 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 functionality
    Enhancement
    good first issue
    IO Parquetparquet, feather
    Status: Closed (completed).
    #49236 In pandas-dev/pandas;
    · by TomAugspurger was closed on Nov 21, 2024

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

    Arrowpyarrow functionality
    DeprecateFunctionality to remove in pandas
    Needs DiscussionRequires discussion from core team before further action
    Status: Closed (completed).
    #52899 In pandas-dev/pandas;
    · by Dr-Irv was closed on Dec 28, 2023

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

    API - ConsistencyInternal Consistency of API/Behavior
    API Design
    Enhancement
    StringsString extension data type and string data
    Status: Closed (completed).
    #51748 In pandas-dev/pandas;
    · by lukefeilberg was closed on Feb 12, 2024

  • DEPR: make_block

    Blocker for rcBlocking issue or pull request for release candidate
    DeprecateFunctionality to remove in pandas
    InternalsRelated to non-user accessible pandas implementation
    Status: Closed (completed).
    #56815 In pandas-dev/pandas;
    · by mroeschke was closed on Jun 4, 2024

  • BUG: assert_index_equal defaults to check_exact_index=False on integers

    API - ConsistencyInternal Consistency of API/Behavior
    Bug
    Testingpandas testing functions or related to the test suite
    Status: Closed (completed).
    #57386 In pandas-dev/pandas;
    · by rhshadrach was closed on Apr 24, 2024

  • DOC: CoW User Guide - Previous behavior is current

    Copy / view semantics
    Docs
    Status: Closed (completed).
    #57290 In pandas-dev/pandas;
    · by VladimirFokow was closed on Mar 16, 2024

  • BUG: to_latex() does not escape index name

    Bug
    IO LaTeXto_latex
    Stylerconditional formatting using DataFrame.style
    Status: Closed (completed).
    #57362 In pandas-dev/pandas;
    · by bileamScheuvens was closed on Apr 28, 2025

  • BUG: validate_docstring uses main python executable instead of sys.executable

    Bug
    CIContinuous Integration
    Status: Closed (completed).
    #57219 In pandas-dev/pandas;
    · by jrmylow was closed on Feb 3, 2024

  • DEPR: groupby.corrwith

    DeprecateFunctionality to remove in pandas
    Groupby
    Needs DiscussionRequires discussion from core team before further action
    Reduction Operationssum, mean, min, max, etc.
    Status: Closed (completed).
    #57158 In pandas-dev/pandas;
    · by rhshadrach was closed on Jun 3, 2024
    •