BUG: DataFrame.diff(np_int_obj) #44577
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jbrockmendel
commented
Nov 22, 2021
jbrockmendel
commented
- closes BUG: diff method raises ValueError when it's called with np.int64 #44572
- tests added / passed
- Ensure all linting tests pass, see here for how to run them
- whatsnew entry
lithomas1
suggested changes
Nov 23, 2021
| ) | ||
| def diff(self, periods: int = 1, axis: Axis = 0) -> DataFrame: | ||
| if not isinstance(periods, int): | ||
| if not lib.is_integer(periods): |
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pandas/core/frame.py:8616: error: "int" has no attribute "is_integer" [attr-defined]
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that's pretty weird, looks like a mypy problem to me
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My bad, this actually refers to the line below if not (is_float(periods) and periods.is_integer()):.
jreback
approved these changes
Nov 23, 2021
| with pytest.raises(ValueError, match="periods must be an integer"): | ||
| df.diff(1.5) | ||
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| def test_diff_allows_np_integer(self): |
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fine, could just parameterize the below one
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not wild about this as it is, but it looks like the next test could use a good splitting, after which combining might make more sense
lithomas1
approved these changes
Nov 23, 2021
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