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1.2

Closed
Overdue by 4 year(s)
•
Due by December 15, 2020
Closed Apr 13, 2021
100% complete

on-merge: backport to 1.2.x

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0 issues of 1768 selected

  • BUG: concat on axis with both different and duplicate labels raising error

    Bug
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #6963 In pandas-dev/pandas;
    · by jorisvandenbossche was closed on Dec 24, 2020

  • DataFrame.to_latex() should honor na_rep after formatter.

    Bug
    IO LaTeXto_latex
    Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
    Status: Closed (completed).
    #9046 In pandas-dev/pandas;
    · by moorepants was closed on Oct 24, 2020

  • CLN/TST: move consoliate sort_index to core/generic.py

    API Design
    InternalsRelated to non-user accessible pandas implementation
    RefactorInternal refactoring of code
    Status: Closed (completed).
    #8283 In pandas-dev/pandas;
    · by jreback was closed on Sep 15, 2020

  • ENH: decode for Categoricals

    API Design
    CategoricalCategorical Data Type
    PerformanceMemory or execution speed performance
    Status: Closed (completed).
    #8628 In pandas-dev/pandas;
    · by fkaufer was closed on Nov 18, 2020

  • API: timeseries accessors naming convention

    API - ConsistencyInternal Consistency of API/Behavior
    API Design
    DatetimeDatetime data dtype
    good first issue
    Status: Closed (completed).
    #9606 In pandas-dev/pandas;
    · by jreback was closed on Oct 29, 2020

  • Python 3 writing to_csv file ignores encoding argument.

    Bug
    Error ReportingIncorrect or improved errors from pandas
    IO CSVread_csv, to_csv
    UnicodeUnicode strings
    Status: Closed (completed).
    #13068 In pandas-dev/pandas;
    · by graingert was closed on Aug 7, 2020

  • COMPAT: should an empty string match a format (or just be NaT)

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #13044 In pandas-dev/pandas;
    · by jreback was closed on Nov 19, 2020

  • pd.Period off by hundred of years for dates past ~2263

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    PeriodPeriod data type
    Status: Closed (completed).
    #13346 In pandas-dev/pandas;
    · by eyurtsev was closed on Oct 5, 2020

  • PERF/COMPAT: use kahan summation in .rolling(..).sum()

    AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff
    Numeric OperationsArithmetic, Comparison, and Logical operations
    PerformanceMemory or execution speed performance
    Windowrolling, ewma, expanding
    Status: Closed (completed).
    #13254 In pandas-dev/pandas;
    · by jreback was closed on Sep 15, 2020

  • s.loc[[]] raises error (only) if index is not unique

    Bug
    IndexingRelated to indexing on series/frames, not to indexes themselves
    MultiIndex
    Status: Closed (completed).
    #13691 In pandas-dev/pandas;
    · by toobaz was closed on Oct 16, 2020

  • to_html ignores na_rep when float_format set

    Bug
    IO HTMLread_html, to_html, Styler.apply, Styler.applymap
    Output-Formatting__repr__ of pandas objects, to_string
    Status: Closed (completed).
    #13828 In pandas-dev/pandas;
    · by paulperry was closed on Oct 24, 2020

  • BUG: index.name not preserved in concat in case of unequal object index

    Bug
    ConstructorsSeries/DataFrame/Index/pd.array Constructors
    IndexRelated to the Index class or subclasses
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #13475 In pandas-dev/pandas;
    · by dllahr was closed on Aug 7, 2020

  • Series.to_string ignores empty lines at the start/end when index=False

    Bug
    good first issue
    IO DataIO issues that don't fit into a more specific label
    Needs TestsUnit test(s) needed to prevent regressions
    Output-Formatting__repr__ of pandas objects, to_string
    Status: Closed (completed).
    #13653 In pandas-dev/pandas;
    · by alberthdev was closed on Sep 30, 2020

  • ENH: cross join in merge() and join()

    Enhancement
    IndexingRelated to indexing on series/frames, not to indexes themselves
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #5401 In pandas-dev/pandas;
    · by RomanPekar was closed on Nov 26, 2020

  • columns selection after groupby reset group_keys to True

    ApplyApply, Aggregate, Transform, Map
    Bug
    Groupby
    Status: Closed (completed).
    #9959 In pandas-dev/pandas;
    · by ruoyu0088 was closed on Aug 31, 2020

  • Groupby built by columns : cannot use .head() or .apply()

    Bug
    Groupby
    Status: Closed (completed).
    #9772 In pandas-dev/pandas;
    · by JonasAbernot was closed on Nov 13, 2020

  • rolling_mean returns small negative value on Series with non-negative values

    Bug
    Windowrolling, ewma, expanding
    Status: Closed (completed).
    #10319 In pandas-dev/pandas;
    · by ahu2012 was closed on Sep 15, 2020

  • Resample yields empty groups

    good first issue
    Needs TestsUnit test(s) needed to prevent regressions
    Status: Closed (completed).
    #10603 In pandas-dev/pandas;
    · by JonasAbernot was closed on Aug 21, 2020

  • DOC: Distinguish between different types of boolean indexing

    Docs
    IndexingRelated to indexing on series/frames, not to indexes themselves
    Status: Closed (completed).
    #10492 In pandas-dev/pandas;
    · by jcjf was closed on Oct 8, 2020

  • csv_read() fails on properly decoding latin-1(i.e. non utf8) encoded file from URL

    Bug
    IO CSVread_csv, to_csv
    IO NetworkLocal or Cloud (AWS, GCS, etc.) IO Issues
    UnicodeUnicode strings
    Status: Closed (completed).
    #10424 In pandas-dev/pandas;
    · by BotoKopo was closed on Aug 17, 2020

  • Bug when computing rolling_mean with extreme value

    API Design
    Docs
    Numeric OperationsArithmetic, Comparison, and Logical operations
    Status: Closed (completed).
    #11645 In pandas-dev/pandas;
    · by julienvienne was closed on Sep 18, 2020

  • ENH: Return RangeIndex for .difference and .symmetric_difference

    Enhancement
    IndexRelated to the Index class or subclasses
    Status: Closed (completed).
    #12034 In pandas-dev/pandas;
    · by jreback was closed on Oct 7, 2020

  • PERF: Poor numerical stability of rolling_kurt and rolling_skew

    Numeric OperationsArithmetic, Comparison, and Logical operations
    PerformanceMemory or execution speed performance
    Windowrolling, ewma, expanding
    Status: Closed (completed).
    #6929 In pandas-dev/pandas;
    · by jaimefrio was closed on Nov 9, 2020

  • Calling shift(n != 0) on an empty DatetimeIndex raises an IndexError

    Bug
    DatetimeDatetime data dtype
    Status: Closed (completed).
    #14811 In pandas-dev/pandas;
    · by chazmo03 was closed on Sep 30, 2020

  • API: Index.append behaviour with categoricals

    API Design
    CategoricalCategorical Data Type
    Enhancement
    IndexRelated to the Index class or subclasses
    ReshapingConcat, Merge/Join, Stack/Unstack, Explode
    Status: Closed (completed).
    #14586 In pandas-dev/pandas;
    · by jorisvandenbossche was closed on Nov 29, 2020
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