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REF: simplify _constructor/_from_mgr/_constructor_from_mgr/...

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

RefactorInternal refactoring of codeInternal refactoring of code

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#56681 In pandas-dev/pandas;

· jbrockmendel opened on Dec 29, 2023

DEPR: require _constructor/_constructor_sliced to return a class

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#51772 In pandas-dev/pandas;

· jbrockmendel opened on Mar 3, 2023

BUG: <code>DataFrameSubClass.groupby()</code> doesn't use methods of subclass

Bug

Groupby

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#51757 In pandas-dev/pandas;

· AdamOrmondroyd opened on Mar 3, 2023

DEPR: __finalize__ and _metadata

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

metadata_metadata, .attrs_metadata, .attrs

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#51280 In pandas-dev/pandas;

· jbrockmendel opened on Feb 10, 2023

BUG: accessing <code>.dtypes</code> in a subclass constructor with large frames causes infinite loop

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#50708 In pandas-dev/pandas;

· ryandvmartin opened on Jan 12, 2023

BUG: AttributeError: 'bool' object has no attribute 'to_numpy' in "mask_missing" method of core/missing.py

Bug

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

replacereplace methodreplace method

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#47101 In pandas-dev/pandas;

· rainnnnny opened on May 24, 2022

BUG: pandas.Interval-inherited class converted automatically to pandas.Interval

Bug

IntervalInterval data typeInterval data type

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#46945 In pandas-dev/pandas;

· PetitLepton opened on May 5, 2022

ENH: also check type of right DataFrame to determine (sub)class of result DataFrame

Enhancement

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

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#44054 In pandas-dev/pandas;

· jorisvandenbossche opened on Oct 16, 2021

API: interaction between subclasses (implementing __finalize__) and attrs/flags handling in __finalize__

API Design

metadata_metadata, .attrs_metadata, .attrs

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#37099 In pandas-dev/pandas;

· jorisvandenbossche opened on Oct 13, 2020

QST: Subclassing and concat

Enhancement

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

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#35415 In pandas-dev/pandas;

· EmilianoJordan opened on Jul 26, 2020

BUG: StringArray non-extensible due to inconsisent assertion

Bug

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

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

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#34309 In pandas-dev/pandas;

· sbrugman opened on May 22, 2020

BUG: Subclassed DataFrame doesn't persist _metadata properties across binary operations

Bug

metadata_metadata, .attrs_metadata, .attrs

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

SubclassingSubclassing pandas objectsSubclassing pandas objects

Status: Open.

#34177 In pandas-dev/pandas;

· clausmith opened on May 14, 2020