Course 1, week 4, second coding assignment

It’s great that you found the solution under your own power! For anyone else who sees this, the tests are correct and that tells you there was some problem with the output of your function. It’s a little hard to decipher what it means by “variable 0”, but you can actually look at the test code if you need to do understand which variable they mean. There is a topic on the FAQ Thread about how to examine the other python files that accompany the notebooks.