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Fix GH-29442 DataFrame.groupby doesn't preserve _metadata

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

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 35688

#35688 In pandas-dev/pandas;

· by Japanuspus was closed on Oct 14, 2020

CLN/BUG: Clean/Simplify _wrap_applied_output

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

Bug

Clean

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 35792

#35792 In pandas-dev/pandas;

· by rhshadrach was closed on Aug 26, 2020

BUG: Segfault with string Index when using Rolling after Groupby

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

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Merged (completed).

pandas-dev/pandasnumber 36753

#36753 In pandas-dev/pandas;

· by phofl was closed on Oct 6, 2020

Backport PR #35792 on branch 1.1.x: CLN/BUG: Clean/Simplify _wrap_applied_output

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

Bug

Status: Merged (completed).

pandas-dev/pandasnumber 37416

#37416 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 26, 2020

Failing test_missing_required_dependency in pandas-wheels

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 37428

#37428 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 27, 2020

REGR: fix groupby std() with nullable dtypes

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 37433

#37433 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Oct 27, 2020

Backport PR #37144 on branch 1.1.x: BLD: update build requirement for py39 #37135

BuildLibrary building on various platformsLibrary building on various platforms

Status: Merged (completed).

pandas-dev/pandasnumber 37189

#37189 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 17, 2020

Backport PR #37181 on branch 1.1.x (BUG: Fix isin with read-only target)

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

Status: Merged (completed).

pandas-dev/pandasnumber 37201

#37201 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 17, 2020

BUG: Regression in Resample.apply raised error when apply affected only a Series

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

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

Resampleresample methodresample method

Status: Merged (completed).

pandas-dev/pandasnumber 37198

#37198 In pandas-dev/pandas;

· by phofl was closed on Oct 20, 2020

BLD: update build requirement for py39 #37135

BuildLibrary building on various platformsLibrary building on various platforms

Status: Merged (completed).

pandas-dev/pandasnumber 37144

#37144 In pandas-dev/pandas;

· by fangchenli was closed on Oct 16, 2020

CI: tz dtype mismatch in test_parquet following pyarrow upgrade

IO Parquetparquet, featherparquet, feather

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Closed (abandoned).

pandas-dev/pandasnumber 37296

#37296 In pandas-dev/pandas;

· by jbrockmendel was closed on Oct 21, 2020

Regression in offsets caused offsets to be no longer hashable

DatetimeDatetime data dtypeDatetime data dtype

FrequencyDateOffsetsDateOffsets

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

Status: Merged (completed).

pandas-dev/pandasnumber 37288

#37288 In pandas-dev/pandas;

· by phofl was closed on Oct 22, 2020

BUG: GH36928 Allow dict_keys to be used as column names by read_csv

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: Merged (completed).

pandas-dev/pandasnumber 36937

#36937 In pandas-dev/pandas;

· by abmyii was closed on Oct 10, 2020

Fix regression in iloc with boolean list

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: Merged (completed).

pandas-dev/pandasnumber 37432

#37432 In pandas-dev/pandas;

· by phofl was closed on Oct 28, 2020

CI: isort fixup on 1.1.x

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 37004

#37004 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 9, 2020

Backport PR #36911: BUG: RollingGroupby not respecting sort=False

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Merged (completed).

pandas-dev/pandasnumber 37002

#37002 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 9, 2020

Backport PR #36753 on branch 1.1.x: BUG: Segfault with string Index when using Rolling after Groupby

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Merged (completed).

pandas-dev/pandasnumber 37003

#37003 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 9, 2020

Backport PR #36950 on branch 1.1.x (REGR: Allow positional arguments in DataFrame.agg)

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

Status: Merged (completed).

pandas-dev/pandasnumber 37005

#37005 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 9, 2020

REGR: fix bug in DatetimeIndex slicing with irregular or unsorted indices

DatetimeDatetime data dtypeDatetime data dtype

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: Merged (completed).

pandas-dev/pandasnumber 37023

#37023 In pandas-dev/pandas;

· by CloseChoice was closed on Oct 26, 2020

Backport PR #36946 on branch 1.1.x (REGR: Make DateOffset immutable)

FrequencyDateOffsetsDateOffsets

Status: Merged (completed).

pandas-dev/pandasnumber 36992

#36992 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 9, 2020

DOC: Add whatsnew for #36727

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 37046

#37046 In pandas-dev/pandas;

· by phofl was closed on Oct 11, 2020

REGR: Fix casting of None to str during astype

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

StringsString extension data type and string dataString extension data type and string data

Status: Merged (completed).

pandas-dev/pandasnumber 37034

#37034 In pandas-dev/pandas;

· by dsaxton was closed on Oct 10, 2020

CI: remove xfail for numpy-dev on branch 1.1.x only

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 37082

#37082 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 14, 2020

Backport PR #37034 on branch 1.1.x (REGR: Fix casting of None to str during astype)

StringsString extension data type and string dataString extension data type and string data

Status: Merged (completed).

pandas-dev/pandasnumber 37076

#37076 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 12, 2020

Backport PR #37046 on branch 1.1.x: Add whatsnew for #36727

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 37079

#37079 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 12, 2020