xref #4892 as I'm going through #20812 I am seeing tests which suggest that trying to call slice_locs with float arguments against an integer type Index should raise a TypeError:

While these tests are currently passing, I believe the TypeError is getting raised from the call to pytest.raises (specifically a 'list' object is not callable for the third argument to pytest.raises) and not as a result of the actual index.slice_locs call.

>>> pd.__version__ '0.23.0.dev0+824.gc4da79b5b.dirty' >>> index = pd.Index(np.array([0, 1, 2, 5, 6, 7, 9, 10], dtype=int)) >>> index.slice_locs(5.0, 10.0) (3, 8) >>> index.slice_locs(4.5, 10.5) (3, 8)