Gotcha. I got it done. REALLY good edge case!

In 'stressed desserts' should equal 'desserts stressed' the first one is not the input value, it is what your function returned instead of the expected value.

That's weird. ALL of my test cases pass except for that one. When I run it locally, it returns a correctly reversed string.

also, just to make sure you read the logs ok: the log appears above the test result.

this is a valid test. it has been thoroughly vetted in Python and works correctly.

test.assert_equals(reverse_words('stressed desserts'), 'desserts stressed')

This test is failing for no reason: 'stressed desserts' should equal 'desserts stressed'

I've tested individually on my own machine running the same version of python, and for some reason this test is failing falsely.

cmp is not necessary to solve this at all. New hint: list index values.