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ENH: Implemented MultiIndex.searchsorted method ( GH14833)

Enhancement

MultiIndex

Status: Open (in progress).

pandas-dev/pandasnumber 61435

#61435 In pandas-dev/pandas;

· GSAUC3 opened on May 12, 2025

Fix alignment in Series subtraction with MultiIndex, Index and NaN values (#60908)

Bug

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

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

MultiIndex

Status: Open (in progress).

pandas-dev/pandasnumber 61381

#61381 In pandas-dev/pandas;

· rit4rosa opened on Apr 30, 2025

DOC: change tuples param for MultiIndex.from_tuples from sequence to iterable

Docs

MultiIndex

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

Status: Open.

#61357 In pandas-dev/pandas;

· yangdanny97 opened on Apr 25, 2025

BUG: remove_unused_levels does not keep index levels order

Bug

MultiIndex

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

Sortinge.g. sort_index, sort_valuese.g. sort_index, sort_values

Status: Open.

#61245 In pandas-dev/pandas;

· mathman79 opened on Apr 7, 2025

BUG: series.reindex(mi) behaves different for series with Index and MultiIndex

Bug

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

MultiIndex

Status: Open.

#60923 In pandas-dev/pandas;

· ssche opened on Feb 13, 2025

BUG: ValueError: Length of values (5) does not match length of index (4) when subtracting two series with MultIndex and Index and nan values

Bug

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

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

MultiIndex

Status: Open.

#60908 In pandas-dev/pandas;

· ssche opened on Feb 11, 2025

BUG: MultiIndex union/difference not commutative

Bug

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

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

MultiIndex

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

setopsunion, intersection, difference, symmetric_differenceunion, intersection, difference, symmetric_difference

Status: Open.

#60642 In pandas-dev/pandas;

· ssche opened on Jan 2, 2025

BUG: user defined function does not work with DataFrame.apply

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

Bug

MultiIndex

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

Status: Open.

#59908 In pandas-dev/pandas;

· shobsi opened on Sep 27, 2024

BUG: inconsistency when read_csv reads MultiIndex with empty values

Bug

IO CSVread_csv, to_csvread_csv, to_csv

MultiIndex

Status: Open.

#59560 In pandas-dev/pandas;

· ldouteau opened on Aug 20, 2024

BUG: read_excel multiindex head with holes

Bug

IO Excelread_excel, to_excelread_excel, to_excel

MultiIndex

Status: Open.

#58898 In pandas-dev/pandas;

· PL-SalvadorFandino opened on Jun 2, 2024

BUG: Insert then delete column into MultiIndex with timestamps leads to RecursionError

Bug

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

MultiIndex

Status: Open.

#56853 In pandas-dev/pandas;

· traubms opened on Jan 12, 2024

BUG: Pandas column rename function now working for multilevel columns

Bug

MultiIndex

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

Status: Open.

#55169 In pandas-dev/pandas;

· DavidKingGH opened on Sep 16, 2023

ENH: initialising MultiIndex with a dtypes param

Enhancement

MultiIndex

Status: Open.

#54523 In pandas-dev/pandas;

· attack68 opened on Aug 13, 2023

BUG: assert_frame_equals fails when MultiIndex elements are None

Bug

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

MultiIndex

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

Status: Open.

#54521 In pandas-dev/pandas;

· attack68 opened on Aug 13, 2023

BUG: pd.MultiIndex is not able to display an index containing a particular tuple of string

Bug

MultiIndex

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

Status: Open.

#54314 In pandas-dev/pandas;

· DSLituiev opened on Jul 30, 2023

BUG: MultiIndex.append now drops names if not the same

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

MultiIndex

Status: Open.

#54303 In pandas-dev/pandas;

· attack68 opened on Jul 29, 2023

BUG: in a level of MultiIndex tz info is lost from labels that represent the same timestamp

Bug

MultiIndex

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#54194 In pandas-dev/pandas;

· maread99 opened on Jul 19, 2023

DOC: Discuss MultiIndex in Indexing and selecting data section

Docs

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

MultiIndex

Status: Open.

#54040 In pandas-dev/pandas;

· mcp292 opened on Jul 7, 2023

BUG: loc-based slicing on multiindex only sometimes respects order of level indexers

Bug

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

MultiIndex

Status: Open.

#54019 In pandas-dev/pandas;

· wence- opened on Jul 6, 2023

BUG:

Bug

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

MultiIndex

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.

#54013 In pandas-dev/pandas;

· mcp292 opened on Jul 5, 2023

BUG: MultiIndex label lookup with empty list indexers inconsistent wrt placement of indexer

Bug

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

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

MultiIndex

Status: Open.

#54009 In pandas-dev/pandas;

· wence- opened on Jul 5, 2023

BUG: partial indexing a multiindex with repeated keys isn't consistent with desugared version

Bug

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

MultiIndex

Status: Open.

#53995 In pandas-dev/pandas;

· wence- opened on Jul 4, 2023

BUG: fillna specify duplicated column that is MultiIndex causes RecursionError

Bug

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

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

MultiIndex

Status: Open.

#53498 In pandas-dev/pandas;

· yuji38kwmt opened on Jun 2, 2023

BUG: slicing DatetimeIndex with unused and unordered levels gives incorrect results

Bug

DatetimeDatetime data dtypeDatetime data dtype

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

MultiIndex

Status: Open.

#53114 In pandas-dev/pandas;

· phofl opened on May 5, 2023

BUG: DataFrame.loc with MultiIndex, unexpected increase of memory

Bug

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

MultiIndex

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#52714 In pandas-dev/pandas;

· trendelkampschroer opened on Apr 18, 2023