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Pull requests list

Initial draft: from_dummies Categorical Categorical Data Type Enhancement
#41902 by pckSF was merged Jun 30, 2022 Loading…
5 of 10 tasks
1.5
181
WIP: categoricals as an internal CategoricalBlock GH5313 Categorical Categorical Data Type Enhancement
#7217 by jreback was merged Jul 14, 2014 Loading…
29 of 31 tasks
0.15.0
3
175
Categorical type Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions
#16015 by TomAugspurger was merged Sep 23, 2017 Loading… 0.21.0
164
ENH: support CategoricalIndex (GH7629) Categorical Categorical Data Type Enhancement Indexing Related to indexing on series/frames, not to indexes themselves
#9741 by jreback was merged Apr 20, 2015 Loading…
9 tasks done
0.16.1
1
118
API: categorical grouping will no longer return the cartesian product API Design Categorical Categorical Data Type Groupby
#20583 by jreback was merged May 1, 2018 Loading… 0.23.0
4
99
Fixups for categoricals Categorical Categorical Data Type
#8153 by jankatins was merged Sep 25, 2014 Loading… 0.15.0
3
96
Categorical fixups Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions
#7768 by jankatins was closed Aug 12, 2014 Loading…
4 of 5 tasks
0.15.0
1
86
Make .str/.dt available for Series of type category with string/datetime API Design Categorical Categorical Data Type Enhancement
#11582 by jankatins was closed Nov 18, 2015 Loading… 0.17.1
80
CLN/DOC/TST: Categorical fixups (GH7768) API Design Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#8007 by jankatins was merged Aug 19, 2014 Loading… 0.15.0
1
76
PERF: CategoricalIndex.get_loc should avoid expensive cast of .codes to int64 Categorical Categorical Data Type Performance Memory or execution speed performance
#21699 by topper-123 was closed Oct 19, 2018 Loading…
2 of 4 tasks
1
69
API: Add dtype parameter to Categorical.from_codes API Design Categorical Categorical Data Type
#24398 by topper-123 was merged Jan 8, 2019 Loading…
3 tasks done
0.24.0
67
ENH: allow categoricals in msgpack Categorical Categorical Data Type Enhancement
#12573 by pwaller was closed Apr 25, 2016 Loading… 0.18.1
66
API/ENH: union Categorical Categorical Categorical Data Type Enhancement
#13361 by chris-b1 was closed Jun 8, 2016 Loading… 0.19.0
65
BUG-26988 implement replace for categorical blocks Bug Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions
#27026 by JustinZhengBC was merged Nov 16, 2019 Loading…
4 tasks done
1.0.0
1
63
WIP/DO NOT MERGE: Categorical improvements Categorical Categorical Data Type Docs
#7444 by jankatins was closed Jul 14, 2014 Loading… 0.15.0
62
BUG: fix categorical comparison with missing values (#26504 ) Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#26514 by another-green was merged Jun 1, 2019 Loading…
4 tasks done
0.25.0
1
62
Categorical.(get|from)_dummies Categorical Categorical Data Type Enhancement Stale
#34426 by clbarnes was closed Mar 21, 2021 Loading…
5 tasks done
1
59
Deprecate groupby/pivot observed=False default Categorical Categorical Data Type Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Stale
#35967 by jseabold was closed Jul 11, 2021 Loading…
5 tasks done
1
59
ENH: parse categoricals in read_csv Categorical Categorical Data Type IO CSV read_csv, to_csv
#13406 by chris-b1 was closed Aug 6, 2016 Loading… 0.19.0
59
BUG: Categorical.unique should keep dtype unchanged API Design Bug Categorical Categorical Data Type
#38140 by topper-123 was merged Apr 16, 2021 Loading…
5 tasks done
1.3
1
59
BUG: Fix groupby with "as_index" for categorical multi #13204 Bug Categorical Categorical Data Type Groupby
#13394 by pijucha was closed Jul 3, 2016 Loading…
4 tasks done
0.19.0
1
58
PERF/ENH: add fast astyping for Categorical Categorical Categorical Data Type Performance Memory or execution speed performance
#37355 by arw2019 was merged Nov 18, 2020 Loading…
5 of 6 tasks
1.2
1
58
pivot_table very slow on Categorical data; how about an observed keyword argument? #24923 Categorical Categorical Data Type Performance Memory or execution speed performance
#24953 by benjaminr was merged Apr 26, 2019 Loading…
1 of 4 tasks
0.25.0
1
58
PERF: GH2003 Series.isin for categorical dtypes Categorical Categorical Data Type Performance Memory or execution speed performance
#20522 by bourbaki was merged Apr 25, 2018 Loading… 0.23.0
1
57
API: deprecate setting of .ordered directly (GH9347, GH9190) API Design Categorical Categorical Data Type
#9611 by jreback was closed Mar 10, 2015 Loading… 0.16.0
3
56
ProTip! Updated in the last three days: updated:>2025-11-27.