BUG: groupby.size and groupby.transform('size') incorrect for axis=1 #45987
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thanks @rhshadrach |
yehoshuadimarsky
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Jul 13, 2022
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| [0, 1, 1, 1], | ||
| [1, 0, 1, 1], | ||
| [0, None, None, None], | ||
| pytest.param([None, None, None, None], marks=pytest.mark.xfail), |
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@rhshadrach im trying to chase down xfails and im not even sure what this means. what do you expect df.groupby(by=[None]*4, ...) to do?
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Current tlyhe [0, 1, 1, 1] case is returning
0 1
1 3
dtype: int64
When dropna=True, I'd expect 4 * [None] to return Series([], dtype='int64') and when dropna=False, I'd expect
np.nan 4
dtype: int64
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.