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ENH: Migrate from ujson to orjson

DependenciesRequired and optional dependenciesRequired and optional dependencies

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Open.

#62464 In pandas-dev/pandas;

· rhshadrach opened on Sep 26, 2025

ENH: Performance enhancements to nanops using <code>numba</code>

DependenciesRequired and optional dependenciesRequired and optional dependencies

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.

#62449 In pandas-dev/pandas;

· eoincondron opened on Sep 25, 2025

Unpin Python version in the development environment

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

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

Status: Open.

#61585 In pandas-dev/pandas;

· datapythonista opened on Jun 6, 2025

BUG: DataFrame.to_markdown exception when a cell has numpy.array type

Bug

DependenciesRequired and optional dependenciesRequired and optional dependencies

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

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

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.

#61337 In pandas-dev/pandas;

· omarsaad98 opened on Apr 22, 2025

BUG: Pandas 2.2 breaks SQLAlchemy 1.4 compatibility

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

DependenciesRequired and optional dependenciesRequired and optional dependencies

IO SQLto_sql, read_sql, read_sql_queryto_sql, read_sql, read_sql_query

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

Status: Open.

#57049 In pandas-dev/pandas;

· miraculixx opened on Jan 24, 2024

·  

2.3.4

BUG: <code>to_timedelta</code> raises unexpected <code>OutOfBoundsTimedelta</code> error with development version of NumPy

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

DependenciesRequired and optional dependenciesRequired and optional dependencies

TimedeltaTimedelta data typeTimedelta data type

Status: Open.

#56996 In pandas-dev/pandas;

· spencerkclark opened on Jan 21, 2024

DOC: Website should copy code only

DependenciesRequired and optional dependenciesRequired and optional dependencies

Docs

Status: Open.

#56388 In pandas-dev/pandas;

· 6801318d8d opened on Dec 7, 2023

BUG: df.query error when using local variable substitution syntax with numexpr 2.8.5 (forbidden control characters)

Bug

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

DependenciesRequired and optional dependenciesRequired and optional dependencies

expressionspd.eval, query, pd.colpd.eval, query, pd.col

Status: Open.

#54449 In pandas-dev/pandas;

· JosephWagner opened on Aug 7, 2023

DEV: reduce the size of the dev environment.yml

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

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

Status: Open.

#49998 In pandas-dev/pandas;

· jorisvandenbossche opened on Dec 1, 2022

DEPR: deprecate pytz support

DependenciesRequired and optional dependenciesRequired and optional dependencies

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#46463 In pandas-dev/pandas;

· jbrockmendel opened on Mar 21, 2022

BUG: to_clipboard() incorrectly claims I have specified a non-single character separator in excel mode.

Bug

DependenciesRequired and optional dependenciesRequired and optional dependencies

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

Status: Open.

#44120 In pandas-dev/pandas;

· simonbance opened on Oct 20, 2021

DEPS: change clipboard backend to pyclip

DependenciesRequired and optional dependenciesRequired and optional dependencies

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

Status: Open.

#39834 In pandas-dev/pandas;

· fangchenli opened on Feb 16, 2021