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2.0

Closed
Overdue by 2 year(s)
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Due by March 6, 2023
Closed Apr 3, 2023
100% complete

on-merge: backport to 2.0.x

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0 issues of 1720 selected

  • str.replace('.','') should replace every character?

    Bug
    StringsString extension data type and string data
    Status: Closed (completed).
    #24804 In pandas-dev/pandas;
    · by ThibTrip was closed on Nov 3, 2022

  • Groupby.transform returns data with incorrect indexing when grouping on categoricals with missing values

    ApplyApply, Aggregate, Transform, Map
    Bug
    CategoricalCategorical Data Type
    Groupby
    Status: Closed (completed).
    #28788 In pandas-dev/pandas;
    · by CassonStallings was closed on Dec 6, 2022

  • Index(SparseArray([int])) has object type

    Bug
    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    Dtype ConversionsUnexpected or buggy dtype conversions
    ExtensionArrayExtending pandas with custom dtypes or arrays.
    IndexRelated to the Index class or subclasses
    Status: Closed (completed).
    #26972 In pandas-dev/pandas;
    · by TomAugspurger was closed on Nov 1, 2022

  • Bug: groupby(..., observed=True) doesn't respect sort key

    Bug
    CategoricalCategorical Data Type
    Groupby
    Status: Closed (completed).
    #27369 In pandas-dev/pandas;
    · by topper-123 was closed on Dec 6, 2022

  • API/ENH: dtype='string' / pd.String

    Enhancement
    ExtensionArrayExtending pandas with custom dtypes or arrays.
    PerformanceMemory or execution speed performance
    StringsString extension data type and string data
    Status: Closed (completed).
    #8640 In pandas-dev/pandas;
    · by jreback was closed on Oct 17, 2022

  • FUT: logging option for future changes

    Compatpandas objects compatability with Numpy or Python functions
    Status: Closed (completed).
    #15703 In pandas-dev/pandas;
    · by jreback was closed on Dec 26, 2019

  • BUG: Cannot create third-party ExtensionArrays for datetime types

    Bug
    ExtensionArrayExtending pandas with custom dtypes or arrays.
    RegressionFunctionality that used to work in a prior pandas version
    Timestamppd.Timestamp and associated methods
    TimezonesTimezone data dtype
    Status: Closed (completed).
    #34986 In pandas-dev/pandas;
    · by xhochy was closed on Sep 19, 2022

  • DEPR: log of deprecations in 1.x (to be removed in 2.0)

    AdminAdministrative tasks related to the pandas project
    DeprecateFunctionality to remove in pandas
    Master TrackerHigh level tracker for similar issues
    Status: Closed (completed).
    #30228 In pandas-dev/pandas;
    · by jorisvandenbossche was closed on Feb 8, 2023

  • Refactor StringMethods for extension arrays

    ExtensionArrayExtending pandas with custom dtypes or arrays.
    RefactorInternal refactoring of code
    StringsString extension data type and string data
    Status: Closed (completed).
    #36216 In pandas-dev/pandas;
    · by TomAugspurger was closed on Sep 30, 2020

  • BUG: DataFrame and Series constructor inconsistent in handling of Datetimelike object index

    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    DatetimeDatetime data dtype
    DeprecateFunctionality to remove in pandas
    IndexRelated to the Index class or subclasses
    Status: Closed (completed).
    #39307 In pandas-dev/pandas;
    · by phofl was closed on Oct 18, 2022

  • BUG: IntervalIndex.astype("category") doesn't preserve exact interval dtype in categories

    Astype
    Bug
    CategoricalCategorical Data Type
    Dtype ConversionsUnexpected or buggy dtype conversions
    IntervalInterval data type
    Status: Closed (completed).
    #38316 In pandas-dev/pandas;
    · by jorisvandenbossche was closed on Aug 29, 2022

  • ENH: add option to get nullable dtypes to pd.read_csv

    Enhancement
    IO CSVread_csv, to_csv
    NA - MaskedArraysRelated to pd.NA and nullable extension arrays
    Status: Closed (completed).
    #36712 In pandas-dev/pandas;
    · by galipremsagar was closed on Oct 7, 2022

  • BUG: very slow groupby(col1)[col2].value_counts() for columns of type 'category'

    AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff
    Bug
    CategoricalCategorical Data Type
    Groupby
    PerformanceMemory or execution speed performance
    Status: Closed (completed).
    #46202 In pandas-dev/pandas;
    · by whypandasslow was closed on Jan 11, 2023

  • BUG: Memory leak in json encoding for time related objects

    IO JSONread_json, to_json, json_normalize
    PerformanceMemory or execution speed performance
    Status: Closed (completed).
    #40443 In pandas-dev/pandas;
    · by Dollars was closed on Jan 18, 2023

  • DEPR: Remove Int64Index, UInt64Index, Float64Index and Index._is_backward_compat_public_numeric_index

    DeprecateFunctionality to remove in pandas
    IndexRelated to the Index class or subclasses
    Status: Closed (completed).
    #42717 In pandas-dev/pandas;
    · by topper-123 was closed on Feb 3, 2023

  • BUG: pandas/tests/test_algos.py::TestValueCounts::test_value_counts_normalized failing on ARM tests

    CIContinuous Integration
    Status: Closed (completed).
    #49468 In pandas-dev/pandas;
    · by MarcoGorelli was closed on Nov 2, 2022

  • BUG/API: Indexes on empty frames/series should be RangeIndex, are Index[object]

    Bug
    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    DataFrameDataFrame data structure
    IndexRelated to the Index class or subclasses
    Needs TriageIssue that has not been reviewed by a pandas team member
    SeriesSeries data structure
    Status: Closed (completed).
    #49572 In pandas-dev/pandas;
    · by topper-123 was closed on Dec 7, 2022

  • API: Series/DataFrame.mask(other) should default to lib.no_default instead of np.nan

    API - ConsistencyInternal Consistency of API/Behavior
    Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
    Status: Closed (completed).
    #49111 In pandas-dev/pandas;
    · by mroeschke was closed on Oct 18, 2022

  • BUG: guess_datetime_format doesn't guess just year

    Bug
    DatetimeDatetime data dtype
    Status: Closed (completed).
    #49126 In pandas-dev/pandas;
    · by MarcoGorelli was closed on Oct 16, 2022

  • BUG: Assigning column with tuple as name from groupby fails

    Bug
    IndexingRelated to indexing on series/frames, not to indexes themselves
    MultiIndex
    Status: Closed (completed).
    #49121 In pandas-dev/pandas;
    · by misantroop was closed on Oct 17, 2022

  • BUG: _guess_datetime_format_for_array doesn't guess if first element is '' or 'NaT'

    Bug
    DatetimeDatetime data dtype
    Status: Closed (completed).
    #49119 In pandas-dev/pandas;
    · by MarcoGorelli was closed on Oct 16, 2022

  • BUG(?)/API: pd.NA + bytes raises TypeError

    Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
    StringsString extension data type and string data
    Status: Closed (completed).
    #49108 In pandas-dev/pandas;
    · by mroeschke was closed on Oct 17, 2022

  • BUG: pd.read_csv with use_nullable_dtypes incompatible with dtype coercion

    IO CSVread_csv, to_csv
    RegressionFunctionality that used to work in a prior pandas version
    Status: Closed (completed).
    #49146 In pandas-dev/pandas;
    · by coroa was closed on Oct 17, 2022

  • BUG: Appending or concatenating to empty ExtensionArray removes type information

    Dtype ConversionsUnexpected or buggy dtype conversions
    ExtensionArrayExtending pandas with custom dtypes or arrays.
    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #48510 In pandas-dev/pandas;
    · by ssche was closed on Sep 15, 2022

  • DOC: Include SeriesGroupBy ops in API docs

    Docs
    Enhancement
    Groupby
    Status: Closed (completed).
    #48399 In pandas-dev/pandas;
    · by rhshadrach was closed on Sep 15, 2022
    •