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BUG: list-like objects are broadcast to each row (1.3 regression)

Bug

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.

#42549 In pandas-dev/pandas;

· erik-hasse opened on Jul 15, 2021

Pandas Series Construction Extremely Slow for Array of Large Series

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#25364 In pandas-dev/pandas;

· ChoiwahChow opened on Feb 19, 2019

DataFrame.rolling does nothing when values are in a list

Enhancement

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Open.

#18129 In pandas-dev/pandas;

· tdpetrou opened on Nov 6, 2017

BUG: unexpected KeyError with Index.get_loc

Bug

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

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.

#11201 In pandas-dev/pandas;

· liuyu81 opened on Sep 29, 2015

DOC: section on caveats of storing lists inside DataFrame/Series

Docs

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

good first issue

Status: Open.

#17027 In pandas-dev/pandas;

· chris-b1 opened on Jul 19, 2017

DEPR/API: tuples in labels

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

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.

#24688 In pandas-dev/pandas;

· h-vetinari opened on Jan 9, 2019

REGR: assigning scalar with a length no longer works

Bug

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

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

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

Status: Open.

#26333 In pandas-dev/pandas;

· jorisvandenbossche opened on May 10, 2019

BUG: Pandas 1.0.5 → 1.1.0 behavior change on DataFrame.apply() where func returns tuple

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

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

Status: Open.

#35518 In pandas-dev/pandas;

· dechamps opened on Aug 2, 2020

BUG: Series mode crashes when there is more than one mode

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

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.

#38534 In pandas-dev/pandas;

· JulioV opened on Dec 17, 2020

pd.DataFrame.__deepcopy__ is does not work when elements are lists (nested)

Bug

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.

#17406 In pandas-dev/pandas;

· mortonjt opened on Aug 31, 2017

ENH: allow lists/sets in fillna

Enhancement

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

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.

#21329 In pandas-dev/pandas;

· h-vetinari opened on Jun 5, 2018

BUG: Regression in 1.1.0: ValueError when assigning tuple

Bug

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

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.

#37629 In pandas-dev/pandas;

· zeeMonkeez opened on Nov 4, 2020