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Issues list

PERF: dropna with SparseArray experiments a much worse time complexity Groupby Performance Memory or execution speed performance Sparse Sparse Data Type
#60179 opened Nov 4, 2024 by mflova
3 tasks done
2
BUG: FutureWarning for Boolean sparse dtypes in pd.DataFrame.sparse.from_spmatrix() Bug Sparse Sparse Data Type Warnings Warnings that appear or should be added to pandas
#59739 opened Sep 6, 2024 by sammlapp
2 of 3 tasks
2.3
@DhruvBShetty
2
DEPR: SparseDtype Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Sparse Sparse Data Type
#56518 opened Dec 15, 2023 by jbrockmendel
1
BUG: pd.DataFrame.sum() min_count parameter does not work with Sparse[float64, nan] dtype Bug Reduction Operations sum, mean, min, max, etc. Sparse Sparse Data Type
#55123 opened Sep 13, 2023 by Danferno
3 tasks done
3
BUG: Wrong result after comparison SparseArray with arrays Bug Numeric Operations Arithmetic, Comparison, and Logical operations Sparse Sparse Data Type
#45284 opened Jan 9, 2022 by bdrum
3 tasks done
@bdrum
1
BUG: SparseArray is not implemented as index first Bug Sparse Sparse Data Type
#45126 opened Dec 30, 2021 by bdrum
3 of 7 tasks
5
API/DEPR: SparseArray constructor usability Constructors Series/DataFrame/Index/pd.array Constructors Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Sparse Sparse Data Type
#43628 opened Sep 17, 2021 by mzeitlin11
1
BUG: COO matrices are copied and converted Docs Sparse Sparse Data Type
#43419 opened Sep 5, 2021 by memeplex
2 of 3 tasks
5
BUG: error writing sparse DataFrame to HDF Bug IO HDF5 read_hdf, HDFStore Sparse Sparse Data Type
#42070 opened Jun 17, 2021 by raphaelquast
2 of 3 tasks
2
BUG: Serializing sparse dataframe 15x slower than converting to dense version + serializing the dense version IO CSV read_csv, to_csv Performance Memory or execution speed performance Sparse Sparse Data Type
#41023 opened Apr 18, 2021 by melkonyan
1
4
BUG: pandas.SparseDtype from pandas.CategoricalDtype fails Bug Categorical Categorical Data Type ExtensionArray Extending pandas with custom dtypes or arrays. Sparse Sparse Data Type
#39874 opened Feb 17, 2021 by PetarMPetrov
BUG: GroupBy.mean() is extremely slow with sparse arrays Groupby Performance Memory or execution speed performance Sparse Sparse Data Type
#36123 opened Sep 4, 2020 by gokceneraslan
1 task
9
BUG: pd.DataFrame.astype for SparseDtype with different fill_value results in data loss Astype Bug Needs Discussion Requires discussion from core team before further action Sparse Sparse Data Type
#35795 opened Aug 18, 2020 by shengpu-tang
2 of 3 tasks
3
API: expected result of concat of SparseArray with Categorical? API - Consistency Internal Consistency of API/Behavior Categorical Categorical Data Type Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sparse Sparse Data Type
#34459 opened May 29, 2020 by jorisvandenbossche
Support pydata/sparse arrays in DataFrame Closing Candidate May be closeable, needs more eyeballs Enhancement ExtensionArray Extending pandas with custom dtypes or arrays. Internals Related to non-user accessible pandas implementation Needs Discussion Requires discussion from core team before further action Sparse Sparse Data Type
#33182 opened Mar 31, 2020 by TomAugspurger
6
Using python comparison operators when SparseArrays of uneven length raises uninformative error Bug Error Reporting Incorrect or improved errors from pandas Numeric Operations Arithmetic, Comparison, and Logical operations Sparse Sparse Data Type
#32119 opened Feb 19, 2020 by dburkhardt
1
DataFrame[SparseArray] coerces to dense on sum(axis=1) Benchmark Performance (ASV) benchmarks Performance Memory or execution speed performance Reduction Operations sum, mean, min, max, etc. Sparse Sparse Data Type
#28487 opened Sep 17, 2019 by scottgigante
6
Recommended way to check for sparse data (DataFrame or Series) Enhancement Needs Discussion Requires discussion from core team before further action Sparse Sparse Data Type
#26706 opened Jun 7, 2019 by jorisvandenbossche
2
@avinashpancham
35
SparseArrays backed by other Extension array/dtype ? Enhancement ExtensionArray Extending pandas with custom dtypes or arrays. Sparse Sparse Data Type
#26407 opened May 15, 2019 by jorisvandenbossche
3
DataFrame with datetime column cannot concat with non-identical columns Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sparse Sparse Data Type
#26288 opened May 6, 2019 by ruiann
9
Reindexing a sparse data structure with a different index results in losing the dtype Bug Regression Functionality that used to work in a prior pandas version Sparse Sparse Data Type
#26123 opened Apr 17, 2019 by hdinh
1
2
BUG: Sparse structures don't fully support value assignment Bug Sparse Sparse Data Type
#21818 opened Jul 8, 2018 by kernc
1
Behaviour of Categorical inputs to sparse data structures Constructors Series/DataFrame/Index/pd.array Constructors Enhancement Sparse Sparse Data Type
#19278 opened Jan 17, 2018 by jnothman
1
8
ENH: Add sparse option in pivot_table / pivot / unstack Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sparse Sparse Data Type
#14493 opened Oct 25, 2016 by yupbank
10
ProTip! Updated in the last three days: updated:>2025-05-14.