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2.3

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Last updated May 21, 2025
88% complete

on-merge: backport to 2.3.x

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0 issues of 43 selected

  • ENH: Need API support and __repr__ to discover the storage used for strings

    Enhancement
    Needs DiscussionRequires discussion from core team before further action
    StringsString extension data type and string data
    Status: Open.
    #59342 In pandas-dev/pandas;
    · arnaudlegout opened on Jul 29, 2024

  • RLS: 2.3

    Release
    Status: Open.
    #59664 In pandas-dev/pandas;
    · lithomas1 opened on Aug 30, 2024

  • API: with CoW, should every new Series/DataFrame object also have its own new Index objects?

    API Design
    Copy / view semantics
    IndexRelated to the Index class or subclasses
    Status: Open.
    #53721 In pandas-dev/pandas;
    · jorisvandenbossche opened on Jun 19, 2023

  • BUG: setting 1.02 into float32 Series upcasts to float64

    Bug
    Dtype ConversionsUnexpected or buggy dtype conversions
    Status: Open.
    #55679 In pandas-dev/pandas;
    · batterseapower opened on Oct 25, 2023

  • BUG: pd.cut raises error when input is a series that includes NaN and bins is a single number of bins

    cutcut, qcut
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #55684 In pandas-dev/pandas;
    · btw08 opened on Oct 25, 2023

  • CoW warning mode for cases that will change behaviour

    Copy / view semantics
    DeprecateFunctionality to remove in pandas
    Status: Open.
    #56019 In pandas-dev/pandas;
    · jorisvandenbossche opened on Nov 17, 2023

  • BUG: rounding dates to 30mins does not work

    DatetimeDatetime data dtype
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57002 In pandas-dev/pandas;
    · Andre-Medina opened on Jan 22, 2024

  • BUG: FutureWarning about 'isin' where it is not used

    Bug
    expressionspd.eval, query
    WarningsWarnings that appear or should be added to pandas
    Status: Open.
    #57028 In pandas-dev/pandas;
    · workflowsguy opened on Jan 23, 2024

  • BUG: Pandas 2.2 breaks SQLAlchemy 1.4 compatibility

    Compatpandas objects compatability with Numpy or Python functions
    DependenciesRequired and optional dependencies
    IO SQLto_sql, read_sql, read_sql_query
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57049 In pandas-dev/pandas;
    · miraculixx opened on Jan 24, 2024

  • pandas' recommendation on inplace deprecation and categorical column

    CategoricalCategorical Data Type
    inplaceRelating to inplace parameter or equivalent
    Needs DiscussionRequires discussion from core team before further action
    Status: Open.
    #57104 In pandas-dev/pandas;
    · adrinjalali opened on Jan 27, 2024

  • BUG: DataFrame.update() raises FutureWarning due to the use of 'where' method

    Bug
    ConditionalsE.g. where, mask, case_when
    DataFrameDataFrame data structure
    Dtype ConversionsUnexpected or buggy dtype conversions
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57124 In pandas-dev/pandas;
    · Clifford-Yen opened on Jan 29, 2024

  • BUG: df.stack() returns wrong data when NaT is in index (regression since 2.1.0, ok in <= 2.0.3)

    Bug
    RegressionFunctionality that used to work in a prior pandas version
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Open.
    #57152 In pandas-dev/pandas;
    · behrenhoff opened on Jan 30, 2024

  • BUG: pandas 2.2.0 <code>DataFrame.groupby</code> regression when group labels of type <code>pd.Timestamp</code>

    Bug
    IndexRelated to the Index class or subclasses
    RegressionFunctionality that used to work in a prior pandas version
    TimezonesTimezone data dtype
    Status: Open.
    #57192 In pandas-dev/pandas;
    · maread99 opened on Feb 1, 2024

  • BUG: Error when trying to use <code>pd.date_range</code>

    Bug
    datetime.datestdlib datetime.date support
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57215 In pandas-dev/pandas;
    · khider opened on Feb 2, 2024

  • BUG: pandas.tseries.offsets.Second() division

    Bug
    FrequencyDateOffsets
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57264 In pandas-dev/pandas;
    · famenzel opened on Feb 5, 2024

  • Potential regression induced by PR #56037

    Non-Nanodatetime64/timedelta64 with non-nanosecond resolution
    PerformanceMemory or execution speed performance
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57366 In pandas-dev/pandas;
    · rhshadrach opened on Feb 11, 2024

  • BUG: Resampling with non nano returns an error

    Bug
    Non-Nanodatetime64/timedelta64 with non-nanosecond resolution
    RegressionFunctionality that used to work in a prior pandas version
    Resampleresample method
    Status: Open.
    #57427 In pandas-dev/pandas;
    · khider opened on Feb 14, 2024

  • DOC: Documentation website says version 2.2 is unstable

    BlockerBlocking issue or pull request for an upcoming release
    Docs
    Status: Open.
    #57593 In pandas-dev/pandas;
    · billtubbs opened on Feb 23, 2024

  • BUG: Cannot use numpy FLS as indicies since pandas 2.2.1

    Bug
    Needs TriageIssue that has not been reviewed by a pandas team member
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57645 In pandas-dev/pandas;
    · jday1 opened on Feb 27, 2024

  • BUG: melt no longer supports id_vars and value_vars collapsing levels accross MultiIndex

    Bug
    RegressionFunctionality that used to work in a prior pandas version
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Open.
    #57663 In pandas-dev/pandas;
    · mark-thm opened on Feb 28, 2024

  • ENH: No longer always show hour, minute and second components for pd.Interval

    Bug
    Output-Formatting__repr__ of pandas objects, to_string
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #57748 In pandas-dev/pandas;
    · ClaireDons opened on Mar 6, 2024

  • Potential regression induced by commit 9cd5e55

    PerformanceMemory or execution speed performance
    RegressionFunctionality that used to work in a prior pandas version
    Status: Open.
    #58287 In pandas-dev/pandas;
    · rhshadrach opened on Apr 17, 2024

  • BUG: pandas testsuite on 2.2.x with numpy 2 fails on numexpr

    Bug
    Needs TriageIssue that has not been reviewed by a pandas team member
    Status: Open.
    #58548 In pandas-dev/pandas;
    · bnavigator opened on May 3, 2024

  • Potential regression induced by "BUG: Use large_string in string array consistently"

    Arrowpyarrow functionality
    Needs TriageIssue that has not been reviewed by a pandas team member
    RegressionFunctionality that used to work in a prior pandas version
    StringsString extension data type and string data
    Status: Open.
    #58651 In pandas-dev/pandas;
    · DeaMariaLeon opened on May 9, 2024

  • BUG: <code>Index.difference</code> is returning too many values

    Bug
    IndexRelated to the Index class or subclasses
    RegressionFunctionality that used to work in a prior pandas version
    setopsunion, intersection, difference, symmetric_difference
    Status: Open.
    #58971 In pandas-dev/pandas;
    · michaelpradel opened on Jun 10, 2024
    •