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BUG: writing categorical of intervals (pd.cut() output) to Parquet is not supported

IntervalInterval data type Interval data type

IO Parquetparquet, feather parquet, feather

Status: Open.

#62235 In pandas-dev/pandas;

· jorisvandenbossche opened on Sep 2, 2025

indexing with a <code>Categorical</code> of <code>Interval</code>s is inefficient

CategoricalCategorical Data Type Categorical Data Type

IntervalInterval data type Interval data type

PerformanceMemory or execution speed performance Memory or execution speed performance

Status: Open.

#61928 In pandas-dev/pandas;

· flying-sheep opened on Jul 23, 2025

BUG: IntervalIndex.unique() only contains the first interval if all interval borders are negative

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

IntervalInterval data type Interval data type

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61920

#61920 In pandas-dev/pandas;

· khemkaran10 opened on Jul 22, 2025

BUG: <code>IntervalIndex.unique()</code> only contains the first interval if all interval borders are negative

AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff

Bug

IntervalInterval data type Interval data type

Status: Open.

#61917 In pandas-dev/pandas;

· johannes-mueller opened on Jul 21, 2025

BUG: <code>interval_range</code> ignores type of <code>start</code> (regression from pandas 2.2.2)

Bug

IntervalInterval data type Interval data type

Needs TriageIssue that has not been reviewed by a pandas team member Issue that has not been reviewed by a pandas team member

Status: Open.

#58964 In pandas-dev/pandas;

· michaelpradel opened on Jun 9, 2024

ENH: No longer always show hour, minute and second components for pd.Interval

Bug

IntervalInterval data type Interval data type

Output-Formatting__repr__ of pandas objects, to_string __repr__ of pandas objects, to_string

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

Status: Open.

#57748 In pandas-dev/pandas;

· ClaireDons opened on Mar 6, 2024

BUG: <code>pd.cut</code> with <code>IntervalIndex</code> produces unexpected results when <code>freq</code> of data and bins differ

Bug

IntervalInterval data type Interval data type

Needs TriageIssue that has not been reviewed by a pandas team member Issue that has not been reviewed by a pandas team member

Status: Open.

#56764 In pandas-dev/pandas;

· bollard opened on Jan 7, 2024

BUG: IntervalIndex.from_arrays with int64 vs uint64 arrays

Bug

IntervalInterval data type Interval data type

Status: Open.

#55715 In pandas-dev/pandas;

· jbrockmendel opened on Oct 26, 2023

DEPR: values casting dt64tz, Interval, Period

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

DatetimeDatetime data dtype Datetime data dtype

DeprecateFunctionality to remove in pandas Functionality to remove in pandas

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

IntervalInterval data type Interval data type

PeriodPeriod data type Period data type

Status: Open.

#54717 In pandas-dev/pandas;

· jbrockmendel opened on Aug 23, 2023

ENH: <code>__contains__</code> between <code>pd.Series</code> and <code>pd.Interval</code>

Enhancement

IntervalInterval data type Interval data type

SeriesSeries data structure Series data structure

Status: Open.

#53843 In pandas-dev/pandas;

· matteosantama opened on Jun 25, 2023

ENH: Create Better IntervalDtype using PyArrow structs.

Arrowpyarrow functionality pyarrow functionality

Enhancement

IntervalInterval data type Interval data type

Status: Open.

#53033 In pandas-dev/pandas;

· randolf-scholz opened on May 2, 2023

BUG: Dropping element from unique IntervalIndex raises InvalidIndexError: Reindexing only valid with uniquely valued Index objects

Bug

IntervalInterval data type Interval data type

Timestamppd.Timestamp and associated methods pd.Timestamp and associated methods

Status: Open.

#52245 In pandas-dev/pandas;

· SlowMo24 opened on Mar 27, 2023