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PERF: <code>DataFrame.copy(deep=True)</code> returns a view on the original pyarrow buffer

Copy / view semantics

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

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#61930 In pandas-dev/pandas;

· TomAugspurger opened on Jul 23, 2025

DOC: Code of Conduct text on webpage &amp; GitHub aren't aligned

Docs

Status: Open.

#50819 In pandas-dev/pandas;

· TomAugspurger opened on Jan 18, 2023

ENH: Generalize RangeIndex to support floats

Enhancement

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

Status: Open.

#46484 In pandas-dev/pandas;

· TomAugspurger opened on Mar 23, 2022

BUG: <code>DataFrame.to_parquet</code> doesn't round-trip pyarrow StringDtype

Docs

IO Parquetparquet, featherparquet, feather

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

Status: Open.

#42664 In pandas-dev/pandas;

· TomAugspurger opened on Jul 22, 2021

Performance regression in reindex.Fillna.time_float_32, etc.

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Open.

#40123 In pandas-dev/pandas;

· TomAugspurger opened on Feb 28, 2021

Sample ExtensionArray.take implementation doesn't correctly handle scalars

Docs

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

Status: Open.

#38762 In pandas-dev/pandas;

· TomAugspurger opened on Dec 28, 2020

pandas/tests/io/json/test_pandas.py::TestPandasContainer::test_read_json_large_numbers failing for 32-bit system

32bit32-bit systems32-bit systems

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Open.

#35279 In pandas-dev/pandas;

· TomAugspurger opened on Jul 15, 2020

BUG: values-dependent reindex behavior in Groupby.apply

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

Bug

Groupby

Status: Open.

#35278 In pandas-dev/pandas;

· TomAugspurger opened on Jul 14, 2020

Inconsistent NA handling for BinGrouper and Grouper

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

Bug

Groupby

Status: Open.

#35251 In pandas-dev/pandas;

· TomAugspurger opened on Jul 12, 2020

ENH: At top-level dataframe function for single-dispatched construction of a DataFrame

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

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

Enhancement

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

Status: Open.

#34799 In pandas-dev/pandas;

· TomAugspurger opened on Jun 15, 2020

DOC/API: Discussion on whether __finalize__ is public

Docs

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.

#33338 In pandas-dev/pandas;

· TomAugspurger opened on Apr 6, 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