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PERF: pandas takes 8-9 seconds to import in a new environment

BuildLibrary building on various platformsLibrary building on various platforms

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

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#53488 In pandas-dev/pandas;

· pyrito opened on Jun 1, 2023

DEPR: restrict downstream usage of core.internals

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

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

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

Status: Open.

#40226 In pandas-dev/pandas;

· jbrockmendel opened on Mar 4, 2021

BUG: freq attribute is None after set_index

Bug

DatetimeDatetime data dtypeDatetime data dtype

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

Status: Open.

#42747 In pandas-dev/pandas;

· antvig opened on Jul 27, 2021

pandas.dataframe.values floating number changes automatically

Bug

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

Status: Open.

#21885 In pandas-dev/pandas;

· snowflake01986 opened on Jul 13, 2018

Practical steps towards a simplified BlockManager

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

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

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

Status: Open.

#34669 In pandas-dev/pandas;

· jorisvandenbossche opened on Jun 9, 2020

INT: include NA values in Categorical.categories

CategoricalCategorical Data TypeCategorical Data Type

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

PDEP missing valuesIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprintIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint

Status: Open.

#37930 In pandas-dev/pandas;

· jbrockmendel opened on Nov 18, 2020

Support pydata/sparse arrays in DataFrame

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

Enhancement

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

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

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

SparseSparse Data TypeSparse Data Type

Status: Open.

#33182 In pandas-dev/pandas;

· TomAugspurger opened on Mar 31, 2020

BUG: Index.join different sorting behavior in libjoin faspath

Bug

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

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

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

Status: Open.

#54646 In pandas-dev/pandas;

· jbrockmendel opened on Aug 20, 2023

Use an enum for infer_dtype return values?

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

RefactorInternal refactoring of codeInternal refactoring of code

Status: Open.

#29868 In pandas-dev/pandas;

· TomAugspurger opened on Nov 26, 2019

BUG: StringArray is a subclass of PandasArray

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

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

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

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

Status: Open.

#48638 In pandas-dev/pandas;

· ehsantn opened on Sep 19, 2022

is_list_like should return false for tuples

Bug

Docs

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

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

Status: Open.

#24702 In pandas-dev/pandas;

· toobaz opened on Jan 10, 2019

BUG: np_can_hold_element raising for numpy_dtype and ea Series

Bug

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

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

Status: Open.

#47776 In pandas-dev/pandas;

· phofl opened on Jul 18, 2022