I'm attempting to do the ZyBooks Swapping Values Lab, and I've hit a bit of a snag. Here's the code I have as of now. ''' Define your function here. ''' def swap_values(user_val1, user_val2): print (user_val2, user_val1) if __name__ == '__main__': ''' Type your code here. Your code must call the function. ''' user_val1 = int(input()) user_val2 = int(input()) swap_values(user_val1, user_val2) I have the compare output test nailed, but I have absolutely no clue how to get it to pass the Unit tests. The three sets of input for these tests are swap_values(-1, 10), swap_values(9, 0), and swap_values(11, 11). I've input all of these, and they work with the function, but the unit tests all say "Your test produced no output.". I can't tell if it means those inputs aren't supposed to be output, or if the auto-grading isn't seeing those inputs. What exactly do I need to do here? Continue reading...