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1.3

Closed
Overdue by 3 year(s)
•
Due by June 30, 2021
Closed Aug 26, 2024
100% complete

on-merge: backport to 1.3.x

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0 issues of 2395 selected

  • API: Allow MultiIndex.rename() to accept a dict as an argument

    Enhancement
    MultiIndex
    Status: Closed (completed).
    #20421 In pandas-dev/pandas;
    · by Dr-Irv was closed on Jan 4, 2021

  • Inconsistent groupby-apply output shape and random values returned.

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20420 In pandas-dev/pandas;
    · by jp-belanger was closed on May 28, 2021

  • BUG: DataFrame/Series.loc improperly allows lookups of boolean labels/slices

    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20432 In pandas-dev/pandas;
    · by jschendel was closed on Apr 6, 2021

  • iloc boolean mask setitem

    Bug
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Status: Closed (completed).
    #20438 In pandas-dev/pandas;
    · by TomAugspurger was closed on May 25, 2021

  • data frame group by with extra categorical column aggregates datetime64 NaT column to float NaN

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20520 In pandas-dev/pandas;
    · by mathiasdiez was closed on May 28, 2021

  • API: Inconsistent behavior with setting slices of Series indexed by MultiIndex

    API Design
    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    MultiIndex
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20414 In pandas-dev/pandas;
    · by Dr-Irv was closed on May 28, 2021

  • BUG: lib.infer_type broken for IntervalArray / PeriodArray

    Bug
    Dtype ConversionsUnexpected or buggy dtype conversions
    ExtensionArrayExtending pandas with custom dtypes or arrays.
    RegressionFunctionality that used to work in a prior pandas version
    Status: Closed (completed).
    #23553 In pandas-dev/pandas;
    · by h-vetinari was closed on Feb 12, 2021

  • Weekmask & holidays error in CustomBusinessHour

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #23542 In pandas-dev/pandas;
    · by mnpica was closed on May 31, 2021

  • Support Decimal("NaN") is pandas.isna

    Dtype ConversionsUnexpected or buggy dtype conversions
    Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
    Status: Closed (completed).
    #23530 In pandas-dev/pandas;
    · by TomAugspurger was closed on Feb 25, 2021

  • Equivalent to the Excel fill handle

    Docs
    Status: Closed (completed).
    #22993 In pandas-dev/pandas;
    · by ghost was closed on Jun 11, 2021

  • Addressing multiindex raises TypeError if indices that are rightmost are not present

    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    MultiIndex
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20951 In pandas-dev/pandas;
    · by MasterAir was closed on May 28, 2021

  • Slicing columns with mixed types <str>,<int> fails with ValueError

    Dtype ConversionsUnexpected or buggy dtype conversions
    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #20975 In pandas-dev/pandas;
    · by achampion was closed on Dec 27, 2020

  • Index() constructor is inconsistent in detecting subclass-specific keyword arguments

    Bug
    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    DatetimeDatetime data dtype
    IndexRelated to the Index class or subclasses
    Status: Closed (completed).
    #22315 In pandas-dev/pandas;
    · by toobaz was closed on Dec 22, 2020

  • Unable to change dtype of a column after concat and duplicate column names

    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #22035 In pandas-dev/pandas;
    · by mitar was closed on Apr 30, 2021

  • BUG: unwanted casting in .isin

    Bug
    Dtype ConversionsUnexpected or buggy dtype conversions
    isinisin method
    Status: Closed (completed).
    #21804 In pandas-dev/pandas;
    · by jreback was closed on Dec 29, 2020

  • Series with dtype=object does unexpected type conversion

    Dtype ConversionsUnexpected or buggy dtype conversions
    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #21881 In pandas-dev/pandas;
    · by AllenDowney was closed on Jan 28, 2021

  • DataFrame.__setitem__ converts Index to RangeIndex for length-zero value

    Dtype ConversionsUnexpected or buggy dtype conversions
    good first issue
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #22060 In pandas-dev/pandas;
    · by s-wakaba was closed on May 31, 2021

  • pd.read_table: Using space as delimiter on file with trailing space gives cryptic error

    Error ReportingIncorrect or improved errors from pandas
    IO CSVread_csv, to_csv
    Status: Closed (completed).
    #21768 In pandas-dev/pandas;
    · by crypdick was closed on Jun 16, 2021

  • tz_compare fails to consider string "UTC" and pytz UTC object equal

    TimezonesTimezone data dtype
    Status: Closed (completed).
    #23959 In pandas-dev/pandas;
    · by TomAugspurger was closed on Jan 19, 2021

  • transform behaves differently with 'ffill' on DataFrameGroupBy and SeriesGroupBy

    good first issue
    Groupby
    Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #24211 In pandas-dev/pandas;
    · by timgeb was closed on Feb 15, 2021

  • sort_index not sorting when multi-index made by different categorical types

    good first issue
    Groupby
    MultiIndex
    Needs TestsUnit test(s) needed to prevent regressions
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #24271 In pandas-dev/pandas;
    · by wiso was closed on Mar 15, 2021

  • DatetimeIndex and Timestamp have different implementation limits

    Bug
    DatetimeDatetime data dtype
    Status: Closed (completed).
    #24124 In pandas-dev/pandas;
    · by jbrockmendel was closed on Jan 21, 2021

  • DataFrame constructor silently ignores <code>dtype</code> keyword when values cannot be coerced

    Bug
    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    Dtype ConversionsUnexpected or buggy dtype conversions
    Error ReportingIncorrect or improved errors from pandas
    Status: Closed (completed).
    #24435 In pandas-dev/pandas;
    · by TomAugspurger was closed on Jun 1, 2021

  • Datetimelike index / arrays ignore integer sign and size in astype

    Bug
    DatetimeDatetime data dtype
    Dtype ConversionsUnexpected or buggy dtype conversions
    Status: Closed (completed).
    #24381 In pandas-dev/pandas;
    · by TomAugspurger was closed on Dec 23, 2020

  • Dataframe constructor misinterprets <code>columns</code> argument if nested list is passed in as the <code>data</code> parameter.

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #14467 In pandas-dev/pandas;
    · by madphysicist was closed on May 19, 2021
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