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Issues list

REGR: setting column with setitem should not modify existing array inplace Closing Candidate May be closeable, needs more eyeballs Copy / view semantics Indexing Related to indexing on series/frames, not to indexes themselves Needs Tests Unit test(s) needed to prevent regressions Regression Functionality that used to work in a prior pandas version
#33457 opened Apr 10, 2020 by jorisvandenbossche
2
34
BUG: iloc setting columns not taking effect Bug Indexing Related to indexing on series/frames, not to indexes themselves
#33198 opened Apr 1, 2020 by jbrockmendel
2
34
ENH: Method for selecting columns from DataFrameGroupBy (and maybe DataFrame) API Design Enhancement Groupby Indexing Related to indexing on series/frames, not to indexes themselves
#40322 opened Mar 9, 2021 by mwaskom
29
BUG: indexing with missing labels deprecation not applied to MultiIndex Bug Error Reporting Incorrect or improved errors from pandas Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
#39424 opened Jan 26, 2021 by attack68
3 tasks done
26
BUG: _validate_setitem_value fails to raise for PandasArray Bug ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves
#51044 opened Jan 28, 2023 by jbrockmendel
4
@dbalagula @maushumee
@Jacsep @yiorgosynkl
22
API: require scalar result from the scalar .at indexer API Design Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action
#33153 opened Mar 30, 2020 by jorisvandenbossche
21
BUG: Assignment of pyarrow arrays yields unexpected dtypes Arrow pyarrow functionality Bug Indexing Related to indexing on series/frames, not to indexes themselves pyarrow dtype retention op with pyarrow dtype -> expect pyarrow result
#56994 opened Jan 21, 2024 by WillAyd
3 tasks done
1
@droussea2001
21
Overview of [] (__getitem__) API API Design Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action
#9595 opened Mar 5, 2015 by jorisvandenbossche
20
Series.reindex() does nothing Enhancement Indexing Related to indexing on series/frames, not to indexes themselves Interval Interval data type
#17132 opened Jul 31, 2017 by dniku
20
BUG: Cannot convert existing column to categorical Bug Indexing Related to indexing on series/frames, not to indexes themselves Regression Functionality that used to work in a prior pandas version
#52593 opened Apr 11, 2023 by Zahlii
3 tasks done
2.2.3
19
Indexing on series where index is output from pd.cut good first issue Indexing Related to indexing on series/frames, not to indexes themselves Needs Tests Unit test(s) needed to prevent regressions
#27437 opened Jul 17, 2019 by kuchenrolle
1
@Thanushri16
17
DataFrame.loc multiple columns replace Bug Indexing Related to indexing on series/frames, not to indexes themselves
#30439 opened Dec 24, 2019 by fansichao
15
ENH: Support ExtensionArray (and masked EAs speficially) in indexing Closing Candidate May be closeable, needs more eyeballs Enhancement ExtensionArray Extending pandas with custom dtypes or arrays. Index Related to the Index class or subclasses Indexing Related to indexing on series/frames, not to indexes themselves NA - MaskedArrays Related to pd.NA and nullable extension arrays
#39133 opened Jan 12, 2021 by jorisvandenbossche
15
ENH: Enable using a boolean loc in a non-boolean index API Design Enhancement Indexing Related to indexing on series/frames, not to indexes themselves
#52102 opened Mar 21, 2023 by alonme
1 of 3 tasks
1
@Rylie-W
15
BUG: assignment with enlargement gives object dtype with ExtensionArrays Bug ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves setitem-with-expansion
#32346 opened Feb 29, 2020 by jorisvandenbossche
1
14
BUG: ArrowStringArray.__setitem__ breaks views Arrow pyarrow functionality Bug ExtensionArray Extending pandas with custom dtypes or arrays. Indexing Related to indexing on series/frames, not to indexes themselves
#45419 opened Jan 17, 2022 by jbrockmendel
14
issues with overlapping multi index intervals Bug Indexing Related to indexing on series/frames, not to indexes themselves Interval Interval data type MultiIndex
#27456 opened Jul 18, 2019 by mahdirajabi96
13
API: indexing DatetimeIndex with date object Bug datetime.date stdlib datetime.date support Datetime Datetime data dtype Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action Regression Functionality that used to work in a prior pandas version
#35830 opened Aug 20, 2020 by Macfly
2 of 3 tasks
1
13
Idea: Make pd.Index.values not writable Enhancement Index Related to the Index class or subclasses Indexing Related to indexing on series/frames, not to indexes themselves
#33001 opened Mar 25, 2020 by ivirshup
1
13
BUG: unexpected KeyError with Index.get_loc Bug Indexing Related to indexing on series/frames, not to indexes themselves Nested Data Data where the values are collections (lists, sets, dicts, objects, etc.).
#11201 opened Sep 29, 2015 by liuyu81
12
Inconsistent behaviour of __getitem__ and .loc with slices for DataFrames with MultiIndex columns API - Consistency Internal Consistency of API/Behavior Bug Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
#26511 opened May 24, 2019 by plammens
12
ENH: find categorical code against categorical label/value Categorical Categorical Data Type Enhancement Indexing Related to indexing on series/frames, not to indexes themselves
#48766 opened Sep 25, 2022 by stevenlis
1 of 3 tasks
@JgLemos
12
Aliases for column names Enhancement Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action
#11723 opened Nov 30, 2015 by bbirand
@jbrockmendel
12
Multi Index timeindex Selecting with xs differs from loc Bug Datetime Datetime data dtype Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
#19451 opened Jan 30, 2018 by yutiansut
11
Assigning scalars to nullable dataframe columns reverts to default dtypes. Bug Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action Strings String extension data type and string data
#31763 opened Feb 6, 2020 by ghost
11
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