List view

BUG: Styler.set_sticky(axis="columns") does not work properly with Multi-Index Rows

Bug

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Closed (completed).

#42537 In pandas-dev/pandas;

· by UncleHoo was closed on Aug 7, 2021

BUG: <code>KeyError</code> when assigning to Series values after pop from DataFrame

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

Status: Closed (completed).

#42530 In pandas-dev/pandas;

· by itssimon was closed on Jul 26, 2021

CI: Fastparquet upgrade broke CI

CIContinuous IntegrationContinuous Integration

IO Parquetparquet, featherparquet, feather

Status: Closed (completed).

#42588 In pandas-dev/pandas;

· by lithomas1 was closed on Aug 8, 2021

BUG: Cannot calculate quantiles from Int64Dtype Series when results are floats

Bug

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

quantilequantile methodquantile method

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42626 In pandas-dev/pandas;

· by tamargrey was closed on Aug 10, 2021

BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values

Bug

InternalsRelated to non-user accessible pandas implementationRelated to non-user accessible pandas implementation

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#42719 In pandas-dev/pandas;

· by wjsi was closed on Jul 27, 2021

QST: Pandas agg(list) behavior changed since version 1.3.0

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42727 In pandas-dev/pandas;

· by buhtz was closed on Jul 28, 2021

BUG: v1.3.1 ImportError: DLL load failed

BlockerBlocking issue or pull request for an upcoming releaseBlocking issue or pull request for an upcoming release

BuildLibrary building on various platformsLibrary building on various platforms

WindowsWindows OSWindows OS

Status: Closed (completed).

#42733 In pandas-dev/pandas;

· by codedawi was closed on Aug 12, 2021

RLS: 1.3.2

Release

Status: Closed (completed).

#42708 In pandas-dev/pandas;

· by simonjayhawkins was closed on Aug 28, 2021

BUG: DataFrame.drop() can't drop row by index tuple when MultiIndex has duplicated value in a level.

Bug

MultiIndex

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#42771 In pandas-dev/pandas;

· by caoyu-yiyue was closed on Jul 31, 2021

BUG: highlight_min and highlight_max do not work with pd.NA

Bug

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Closed (completed).

#42750 In pandas-dev/pandas;

· by cynddl was closed on Aug 4, 2021

BUG: Inconsistent result from centered datetime-like rolling window aggregates

Bug

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Closed (completed).

#42753 In pandas-dev/pandas;

· by dicristina was closed on Aug 7, 2021

BUG: nlargest raises TypeError "No matching signature found" on Float64Dtype Series, versions &gt;1.3.0

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diffNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42816 In pandas-dev/pandas;

· by hottwaj was closed on Aug 10, 2021

BUG: read_csv raises an error when both <code>prefix</code> and <code>names</code> are set to <code>None</code>

Bug

IO CSVread_csv, to_csvread_csv, to_csv

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42387 In pandas-dev/pandas;

· by lhoestq was closed on Jul 30, 2021

BUG: Regression on DataFrame.from_records

ConstructorsSeries/DataFrame/Index/pd.array ConstructorsSeries/DataFrame/Index/pd.array Constructors

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42456 In pandas-dev/pandas;

· by felixdivo was closed on Jul 26, 2021

BUG: 1D slices over extension types turn into N-dimensional slices over ExtensionArrays

Bug

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42430 In pandas-dev/pandas;

· by frreiss was closed on Jul 31, 2021

BUG: extraneous copy of extension arrays in v1.3.0

Copy / view semantics

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42501 In pandas-dev/pandas;

· by gsakkis was closed on Aug 11, 2021

BUG: DatetimeIndex de-serializing fails in PYTHONOPTIMIZE mode (python -O)

Bug

DatetimeDatetime data dtypeDatetime data dtype

Status: Closed (completed).

#42866 In pandas-dev/pandas;

· by GorAlexander was closed on Aug 5, 2021

BUG: <code>Styler.hide_columns()</code> does not hide index name row

Bug

good first issue

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Closed (completed).

#42101 In pandas-dev/pandas;

· by attack68 was closed on Aug 3, 2021

CI: jedi v0.18.0 breaks a number of ipython test_tab_complete_warning tests

CIContinuous IntegrationContinuous Integration

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Status: Closed (completed).

#38703 In pandas-dev/pandas;

· by moink was closed on Aug 2, 2021

BUG: MatplotlibDeprecationWarning is_last_row function was deprecated in Matplotlib 3.4

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

DependenciesRequired and optional dependenciesRequired and optional dependencies

Visualizationplottingplotting

Status: Closed (completed).

#42791 In pandas-dev/pandas;

· by yinhm was closed on Jul 29, 2021

BUG: Series.clip() behaviour is wrong with Series[datetime] comparison to pd.Timestamp.{min,max}

DatetimeDatetime data dtypeDatetime data dtype

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42794 In pandas-dev/pandas;

· by elidhu was closed on Jul 29, 2021

read_excel() modifies provided types dict when accessing file with duplicate column

Bug

IO Excelread_excel, to_excelread_excel, to_excel

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#42462 In pandas-dev/pandas;

· by cdol was closed on Aug 4, 2021

BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values

InternalsRelated to non-user accessible pandas implementationRelated to non-user accessible pandas implementation

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Merged (completed).

pandas-dev/pandasnumber 42453

#42453 In pandas-dev/pandas;

· by wjsi was closed on Jul 27, 2021

read_excel() modifies provided types dict when accessing file with duplicate column

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Status: Merged (completed).

pandas-dev/pandasnumber 42508

#42508 In pandas-dev/pandas;

· by debnathshoham was closed on Aug 4, 2021

BUG: Incorrect variable window bounds for first row when offset cover all rows

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Merged (completed).

pandas-dev/pandasnumber 42776

#42776 In pandas-dev/pandas;

· by dicristina was closed on Aug 7, 2021