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BUG: preserve categorical & sparse types when grouping / pivot

CategoricalCategorical Data TypeCategorical Data Type

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

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 27071

#27071 In pandas-dev/pandas;

· by jreback was closed on Jun 27, 2019

· 

0.25.0

BUG: preserve categorical & sparse types when grouping / pivot & preserve dtypes on ufuncs

Bug

CategoricalCategorical Data TypeCategorical Data Type

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

Groupby

SparseSparse Data TypeSparse Data Type

Status: Closed (abandoned).

pandas-dev/pandasnumber 26550

#26550 In pandas-dev/pandas;

· by jreback was closed on Jun 27, 2019

· 

0.25.0

CLN: reorg groupby to multiple modules

Groupby

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 21820

#21820 In pandas-dev/pandas;

· by jreback was closed on Jul 11, 2018

· 

0.24.0

CLN: clean up groupby / categorical

CategoricalCategorical Data TypeCategorical Data Type

Groupby

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 21753

#21753 In pandas-dev/pandas;

· by jreback was closed on Jul 6, 2018

· 

0.24.0

TST: xfail flaky 3.7 test, xref #21636

CategoricalCategorical Data TypeCategorical Data Type

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 21637

#21637 In pandas-dev/pandas;

· by jreback was closed on Jun 26, 2018

· 

0.23.2

BUG: dropna incorrect with categoricals in pivot_table

Bug

CategoricalCategorical Data TypeCategorical Data Type

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 21252

#21252 In pandas-dev/pandas;

· by jreback was closed on Jun 7, 2018

· 

0.23.1

BUG in .groupby.apply when applying a function that has mixed data types and the user supplied function can fail on the grouping column

Bug

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 20959

#20959 In pandas-dev/pandas;

· by jreback was closed on May 8, 2018

· 

0.23.0

DOC: followup to #20583, observed kwarg for .groupby

Docs

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 20941

#20941 In pandas-dev/pandas;

· by jreback was closed on May 5, 2018

· 

0.23.0

TST: split test_groupby.py

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 20781

#20781 In pandas-dev/pandas;

· by jreback was closed on Apr 21, 2018

· 

0.23.0

API: categorical grouping will no longer return the cartesian product

API Design

CategoricalCategorical Data TypeCategorical Data Type

Groupby

Status: Merged (completed).

pandas-dev/pandasnumber 20583

#20583 In pandas-dev/pandas;

· by jreback was closed on May 1, 2018

· 

0.23.0

TST: separate out grouping-type tests

Clean

Groupby

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

Status: Merged (completed).

pandas-dev/pandasnumber 18057

#18057 In pandas-dev/pandas;

· by jreback was closed on Nov 1, 2017

· 

0.23.0

BUG: Bug in .resample() and .groupby() when aggregating on integers

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

Groupby

Resampleresample methodresample method

Status: Merged (completed).

pandas-dev/pandasnumber 16549

#16549 In pandas-dev/pandas;

· by jreback was closed on May 31, 2017

· 

0.20.2