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BUG: Behavior change in pandas 3.x with <code>Series.resample</code> and <code>closed="right", how="right"</code>

Bug

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

Resampleresample methodresample method

Status: Open.

#62200 In pandas-dev/pandas;

· TomAugspurger opened on Aug 26, 2025

· 

3.0

BUG: resampling with origin=end_date includes extra elements in the bucket

Bug

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

Resampleresample methodresample method

Status: Open.

#62154 In pandas-dev/pandas;

· vasil-pashov opened on Aug 20, 2025

BUG: Empty column name in group dataframe when using pyarrow types

Bug

Resampleresample methodresample method

Status: Open.

#59823 In pandas-dev/pandas;

· dbalabka opened on Sep 16, 2024

BUG: Resampling to <code>"B"</code> frequency with <code>closed="right"</code> and <code>label="right"</code> adds empty bins

Bug

Resampleresample methodresample method

Status: Open.

#59495 In pandas-dev/pandas;

· torext opened on Aug 13, 2024

BUG: groupby then resample on column gives incorrect results if the index is out of order

Bug

Groupby

Resampleresample methodresample method

Status: Open.

#59350 In pandas-dev/pandas;

· knowecho opened on Jul 30, 2024

BUG: In <code>main</code>, using <code>resample().interpolate(inplace=True)</code> raises an exception

Bug

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Resampleresample methodresample method

Status: Open.

#58690 In pandas-dev/pandas;

· Dr-Irv opened on May 12, 2024

ENH: Downsampling pyarrow backed DatetimeIndex should potentially return date32 instead of timestamp

Arrowpyarrow functionalitypyarrow functionality

DatetimeDatetime data dtypeDatetime data dtype

datetime.datestdlib datetime.date supportstdlib datetime.date support

Enhancement

Resampleresample methodresample method

Status: Open.

#58308 In pandas-dev/pandas;

· WillAyd opened on Apr 18, 2024

BUG: Incorrect behaviour when using <code>loc</code> on a resampled time index dataframe

Bug

FrequencyDateOffsetsDateOffsets

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

Resampleresample methodresample method

Status: Open.

#58255 In pandas-dev/pandas;

· jose-moran opened on Apr 14, 2024

BUG: Resampling with non nano returns an error

Bug

Non-Nanodatetime64/timedelta64 with non-nanosecond resolutiondatetime64/timedelta64 with non-nanosecond resolution

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

Resampleresample methodresample method

Status: Open.

#57427 In pandas-dev/pandas;

· khider opened on Feb 14, 2024

QST: FutureWarning: Resampling with a PeriodIndex is deprecated, how to resample now?

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

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

PeriodPeriod data typePeriod data type

Resampleresample methodresample method

Status: Open.

#57033 In pandas-dev/pandas;

· andreas-wolf opened on Jan 23, 2024

· 

3.0

ENH: Add limit_area to Resample.ffill and Resample.bfill

Enhancement

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Resampleresample methodresample method

Status: Open.

#56532 In pandas-dev/pandas;

· rhshadrach opened on Dec 17, 2023

PERF: Optimize resample Method by Adding Precomputation and Subgroup Aggregation Option

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

PerformanceMemory or execution speed performanceMemory or execution speed performance

Resampleresample methodresample method

Status: Open.

#55563 In pandas-dev/pandas;

· dorianquelle opened on Oct 17, 2023