Search results

API: <code>freq</code> or <code>step</code> for base class Index?

API Design

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

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

Status: Open.

#62219 In pandas-dev/pandas;

· jbrockmendel opened on Aug 29, 2025

BUG / API: setitem on pandas object fails if underlying numpy array is read-only

API Design

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

Status: Open.

#62144 In pandas-dev/pandas;

· jorisvandenbossche opened on Aug 19, 2025

· 

3.0

REF/API: Move ArrowDtype(pa.foo_string()) into StringDtype(...)

API Design

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

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

Status: Open.

#62129 In pandas-dev/pandas;

· jbrockmendel opened on Aug 16, 2025

API: New global option to set the default dtypes to use

API Design

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

Status: Open.

#61620 In pandas-dev/pandas;

· datapythonista opened on Jun 10, 2025

Proposal to allow third-party engines for readers and writers

API Design

Enhancement

IO DataIO issues that don't fit into a more specific labelIO issues that don't fit into a more specific label

Status: Open.

#61584 In pandas-dev/pandas;

· datapythonista opened on Jun 6, 2025

Improve the apply/map APIs

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

API Design

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

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

Status: Open.

#61128 In pandas-dev/pandas;

· datapythonista opened on Mar 15, 2025

API: Design questions for HDFStore.append

API Design

IO HDF5read_hdf, HDFStoreread_hdf, HDFStore

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

Status: Open.

#60920 In pandas-dev/pandas;

· JakeTT404 opened on Feb 12, 2025

API: <code>future.default_arg</code> for method-specific behavior changes

API Design

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

Status: Open.

#60593 In pandas-dev/pandas;

· rhshadrach opened on Dec 20, 2024

API: pass <code>ddof</code> down to Cythonised <code>std</code> / <code>var</code> in <code>groupby.agg</code>

API Design

Groupby

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

Reduction Operationssum, mean, min, max, etc.sum, mean, min, max, etc.

Status: Open.

#60591 In pandas-dev/pandas;

· MarcoGorelli opened on Dec 20, 2024

API: how to check for "logical" equality of dtypes?

API Design

Status: Open.

#60305 In pandas-dev/pandas;

· jorisvandenbossche opened on Nov 13, 2024

QST: Consistently apply Welford Method and Kahan Summation in roll_xxx functions

API Design

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

Reduction Operationssum, mean, min, max, etc.sum, mean, min, max, etc.

Status: Open.

#59715 In pandas-dev/pandas;

· kaixiongg opened on Sep 5, 2024

API: pd.StringDtype.value_counts should return pd.Int64Dtype

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

API Design

Arrowpyarrow functionalitypyarrow functionality

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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

Status: Open.

#59346 In pandas-dev/pandas;

· WillAyd opened on Jul 29, 2024