You could just add an if to solve that problem c:

Indeed, I stand corrected. (facepalm)

In Python, the penultimate test.

That makes total sense, but there is no test that expects [], so... ¯\_(ツ)_/¯

They surely are misreading the error message: [1] should equal [] where the first value is what they're returning, not the input.

Not sure how you both had this problem . . . as there is no such test like that in Python (I see you are both coding only in Python). If there were a test like this, [1] should NOT return [] because it contains an integer it should return unchanged [1].

I have the same problem...