Search results

BUG: DataFrame.explode fails with str dtype

Bug

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

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

Status: Merged (completed).

pandas-dev/pandasnumber 61623

#61623 In pandas-dev/pandas;

· by rhshadrach was closed on Jun 24, 2025

· 

2.3.1

TST(string dtype): Resolve xfails in test_from_dummies

Docs

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

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

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 60694

#60694 In pandas-dev/pandas;

· by rhshadrach was closed on Jul 15, 2025

· 

3.0

REGR: DataFrame.transpose resulting in not contiguous data on nullable EAs

Bug

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

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Merged (completed).

pandas-dev/pandasnumber 57474

#57474 In pandas-dev/pandas;

· by rhshadrach was closed on Feb 18, 2024

· 

2.2.1

REGR: DataFrame.stack was sometimes sorting resulting index

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

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

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#53969 In pandas-dev/pandas;

· by rhshadrach was closed on Jul 13, 2023

· 

2.1

ENH: Add new implementation of DataFrame.stack

Enhancement

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Merged (completed).

pandas-dev/pandasnumber 53921

#53921 In pandas-dev/pandas;

· by rhshadrach was closed on Aug 2, 2023

· 

2.1

BUG: DataFrame.stack sorting index values in rare cases

Bug

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#53824 In pandas-dev/pandas;

· by rhshadrach was closed on Jun 28, 2023

· 

2.1

DEPR: DataFrame.stack on columns containing duplicate values

Bug

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

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#53761 In pandas-dev/pandas;

· by rhshadrach was closed on Aug 3, 2023

BUG: DataFrame.stack with <code>sort=True</code> and unsorted MultiIndex levels

Bug

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#53636 In pandas-dev/pandas;

· by rhshadrach was closed on Jun 13, 2023

REGR: Better warning in pivot_table when dropping nuisance columns

Nuisance ColumnsIdentifying/Dropping nuisance columns in reductions, groupby.add, DataFrame.applyIdentifying/Dropping nuisance columns in reductions, groupby.add, DataFrame.apply

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

WarningsWarnings that appear or should be added to pandasWarnings that appear or should be added to pandas

Status: Merged (completed).

pandas-dev/pandasnumber 49615

#49615 In pandas-dev/pandas;

· by rhshadrach was closed on Nov 10, 2022

· 

1.5.2

DOC: Merge/join treats lists/tuples differently than other list-likes

Docs

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Open.

#44077 In pandas-dev/pandas;

· rhshadrach opened on Oct 18, 2021