BUG: GroupBy.value_counts sorting order #56016
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rhshadrach
added
Bug
Groupby
Algos
mroeschke
reviewed
Nov 17, 2023
| @pytest.mark.parametrize("normalize", [True, False]) | ||
| def test_value_counts_sort(sort, vc_sort, normalize): | ||
| # GH#55951 | ||
| df = DataFrame({"a": [2, 1, 1, 1], 0: [3, 4, 3, 3]}) |
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Could you also tests with Categorical?
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Thanks - good call. I added a test and found a bug calling .sortlevel() in the categorical section. But the categorical behavior is still buggy here; namely
pandas/pandas/core/groupby/groupby.py
Lines 2824 to 2826 in ef2c61a
is constructing the index by taking the cartesian product across all groupings; it should only be doing this for the categorical variables. That's not an easy fix, but will be handled in #55738 where we can just remove that whole block of code.
mroeschke
approved these changes
Nov 17, 2023
|
Thanks @rhshadrach |
This was referenced Nov 17, 2023
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.