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Issues list

ENH: read_csv dtype with datetime w/tz & integrations with category Categorical Categorical Data Type Datetime Datetime data dtype Enhancement IO CSV read_csv, to_csv
#24542 opened Jan 2, 2019 by jreback
3
Add tests asserting that EAs shouldn't be coerced to ndarray Categorical Categorical Data Type Enhancement Testing pandas testing functions or related to the test suite
#24207 opened Dec 10, 2018 by TomAugspurger
Automatically keep categorical type on merge Bug Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#24093 opened Dec 4, 2018 by Gerenuk
2
DataFrame.fillna() fails with categorical columns present when trying to fill missing values in numeric columns with NaNs Bug Categorical Categorical Data Type Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#24079 opened Dec 3, 2018 by dragoljub
10
Missing Values and Categoricals - inconsistent dtypes Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions Enhancement
#23242 opened Oct 19, 2018 by Dr-Irv
4
Reading pandas DataFrame with categorical columns from an HDF file with 'where' Bug Categorical Categorical Data Type IO HDF5 read_hdf, HDFStore
#22977 opened Oct 3, 2018 by vss888
1
"TypeError: unorderable types" in Python3 when initializing Categorical with array values including tuples #15457 Bug Categorical Categorical Data Type Nested Data Data where the values are collections (lists, sets, dicts, objects, etc.).
#22080 opened Jul 27, 2018 by toobaz
Feature Request: allow user defined categories in get_dummies Categorical Categorical Data Type Docs
#22078 opened Jul 27, 2018 by abieler
1
4
Pandas indexing bug raises TypeError when slicing with categorical IntervalIndex Bug Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves Interval Interval data type
#21068 opened May 16, 2018 by antipisa
6
str.cat should return categorical data for categorical caller Categorical Categorical Data Type Enhancement Needs Discussion Requires discussion from core team before further action Strings String extension data type and string data
#20845 opened Apr 27, 2018 by h-vetinari
2
Bad Error message / docs for Categorical.fillna with dict value Categorical Categorical Data Type Docs Error Reporting Incorrect or improved errors from pandas Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#19705 opened Feb 14, 2018 by TomAugspurger
2
ENH: Series.str.get_dummies should defer to pd.get_dummies and pass thru args Categorical Categorical Data Type Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data
#19618 opened Feb 9, 2018 by randomgambit
1
9
PERF: Optimize _categorical_convert CSV parser when categories are known ahead of time Categorical Categorical Data Type IO CSV read_csv, to_csv Performance Memory or execution speed performance
#17743 opened Oct 2, 2017 by TomAugspurger
Order of Categories in unordered Categorical causes query bugs in read_hdf Bug Categorical Categorical Data Type IO HDF5 read_hdf, HDFStore
#16623 opened Jun 7, 2017 by stoddardg
1
pd.crosstab, categorical data and missing instances Categorical Categorical Data Type Docs good first issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#16367 opened May 16, 2017 by peisenha
15
Series.map on a Categorical with a function only processes each unique value once Categorical Categorical Data Type Docs
#15706 opened Mar 16, 2017 by Kodiologist
2
API: type conversions on merges Bug Categorical Categorical Data Type Dtype Conversions Unexpected or buggy dtype conversions Error Reporting Incorrect or improved errors from pandas Needs Discussion Requires discussion from core team before further action
#15332 opened Feb 7, 2017 by chris-b1
5
API: .str ops on category should return category if result is non-boolean Categorical Categorical Data Type Enhancement Needs Discussion Requires discussion from core team before further action Strings String extension data type and string data
#15198 opened Jan 23, 2017 by jreback
4
ERR: handle category dtype in .query with engine=numexpr Bug Categorical Categorical Data Type expressions pd.eval, query
#15186 opened Jan 22, 2017 by Kevin-McIsaac
3
append / concat category with different categories fails in HDF5 Categorical Categorical Data Type Enhancement IO HDF5 read_hdf, HDFStore
#14613 opened Nov 8, 2016 by littlegreenbean33
9
API: Expand read_csv dtype for categoricals Categorical Categorical Data Type Enhancement IO CSV read_csv, to_csv
#14503 opened Oct 26, 2016 by TomAugspurger
2
BUG: sorting of category dtypes Bug Categorical Categorical Data Type
#14368 opened Oct 6, 2016 by jreback
1
7
API: union_categoricals in concat Categorical Categorical Data Type Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#14177 opened Sep 7, 2016 by jorisvandenbossche
6
BUG: concat with categorical keys doesn't preserve categorical dtype Bug Categorical Categorical Data Type Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#14016 opened Aug 16, 2016 by pijucha
1
1
ENH: return .dt.weekday/isoweekday/month_name/day_name as ordered categoricals Categorical Categorical Data Type Datetime Datetime data dtype Enhancement
#12993 opened Apr 26, 2016 by jreback
1
14
ProTip! Exclude everything labeled bug with -label:bug.