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ENH: add use_nullable_dtypes option in read_parquet

IO Parquetparquet, featherparquet, feather

Status: Merged (completed).

pandas-dev/pandasnumber 31242

#31242 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Nov 29, 2020

lreshape and wide_to_long documentation (Closes #33417)

Docs

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

Status: Merged (completed).

pandas-dev/pandasnumber 33418

#33418 In pandas-dev/pandas;

· by tpanza was closed on Aug 19, 2020

CLN: replaced Appender with doc

Clean

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 33633

#33633 In pandas-dev/pandas;

· by smartvinnetou was closed on Sep 13, 2020

BUG: BlockSlider not clearing index._cache

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

Status: Merged (completed).

pandas-dev/pandasnumber 35937

#35937 In pandas-dev/pandas;

· by jbrockmendel was closed on Sep 2, 2020

TYP: misc typing cleanups for #32911

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35954

#35954 In pandas-dev/pandas;

· by simonjayhawkins was closed on Aug 29, 2020

TYP: misc typing cleanups for #29116

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35953

#35953 In pandas-dev/pandas;

· by simonjayhawkins was closed on Aug 30, 2020

TYP: Remove NDFrame._add_series_or_dataframe_operations

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35957

#35957 In pandas-dev/pandas;

· by topper-123 was closed on Aug 30, 2020

Issue35925 remove more trailing commas

Clean

Status: Merged (completed).

pandas-dev/pandasnumber 35959

#35959 In pandas-dev/pandas;

· by jpribyl was closed on Aug 28, 2020

TYP: misc cleanup in core\groupby\generic.py

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35955

#35955 In pandas-dev/pandas;

· by simonjayhawkins was closed on Aug 28, 2020

Issue35925 remove trailing commas

Clean

Code StyleCode style, linting, code_checksCode style, linting, code_checks

Status: Merged (completed).

pandas-dev/pandasnumber 35956

#35956 In pandas-dev/pandas;

· by jpribyl was closed on Aug 28, 2020

BUG: Fix DataFrame.groupby().apply() for NaN groups with dropna=False

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

Bug

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 35951

#35951 In pandas-dev/pandas;

· by cwkwong was closed on Sep 5, 2020

TYP: annotate tseries.holiday

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35913

#35913 In pandas-dev/pandas;

· by jbrockmendel was closed on Aug 27, 2020

REF: window/test_dtypes.py with pytest idioms

RefactorInternal refactoring of codeInternal refactoring of code

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

Status: Merged (completed).

pandas-dev/pandasnumber 35918

#35918 In pandas-dev/pandas;

· by mroeschke was closed on Sep 5, 2020

TYP: misc cleanup in core\generic.py

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35963

#35963 In pandas-dev/pandas;

· by simonjayhawkins was closed on Aug 29, 2020

BUG/CLN: Decouple Series/DataFrame.transform

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

Bug

Clean

Status: Merged (completed).

pandas-dev/pandasnumber 35964

#35964 In pandas-dev/pandas;

· by rhshadrach was closed on Sep 12, 2020

TYP: annotate plotting based on _get_axe_freq

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35960

#35960 In pandas-dev/pandas;

· by jbrockmendel was closed on Aug 30, 2020

BUG: instantiation using a dict with a period scalar

Bug

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

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

PeriodPeriod data typePeriod data type

Status: Merged (completed).

pandas-dev/pandasnumber 35966

#35966 In pandas-dev/pandas;

· by justinessert was closed on Sep 11, 2020

TYP: annotate plotting._matplotlib.tools

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 35968

#35968 In pandas-dev/pandas;

· by jbrockmendel was closed on Aug 31, 2020

TYP: Postponed Evaluation of Annotations (PEP 563)

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 36034

#36034 In pandas-dev/pandas;

· by simonjayhawkins was closed on Sep 2, 2020

remove trailing commas for #35925

Clean

Code StyleCode style, linting, code_checksCode style, linting, code_checks

Status: Merged (completed).

pandas-dev/pandasnumber 36029

#36029 In pandas-dev/pandas;

· by Anshoo-Rajput was closed on Sep 1, 2020

ENH: add set_td_classes method for CSS class addition to data cells

Enhancement

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Merged (completed).

pandas-dev/pandasnumber 36159

#36159 In pandas-dev/pandas;

· by attack68 was closed on Sep 13, 2020

Make to_numeric default to correct precision

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

IO CSVread_csv, to_csvread_csv, to_csv

Status: Merged (completed).

pandas-dev/pandasnumber 36149

#36149 In pandas-dev/pandas;

· by Dr-Irv was closed on Sep 8, 2020

CLN: Separate transform tests

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

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

Status: Merged (completed).

pandas-dev/pandasnumber 36146

#36146 In pandas-dev/pandas;

· by rhshadrach was closed on Sep 6, 2020

DEPR: disallow tznaive datetimes when indexing tzaware datetimeindex

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

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

TimezonesTimezone data dtypeTimezone data dtype

Status: Merged (completed).

pandas-dev/pandasnumber 36148

#36148 In pandas-dev/pandas;

· by jbrockmendel was closed on Oct 7, 2020

REF: share more EA methods

API - ConsistencyInternal Consistency of API/BehaviorInternal Consistency of API/Behavior

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

Status: Merged (completed).

pandas-dev/pandasnumber 36154

#36154 In pandas-dev/pandas;

· by jbrockmendel was closed on Sep 6, 2020