What is the error ?

Question

I did this code that define a function that return the kcal value to kj but there is no output why ?
https://code.sololearn.com/cu3RDKt6MCrx/?ref=app
https://code.sololearn.com/cu3RDKt6MCrx/?ref=app
https://code.sololearn.com/cu3RDKt6MCrx/?ref=app

Answer 1

Well assert gives the AssertionError if the condition is NOT met. Therefore, what you should be doing is:

assert (x>=0), "Negative!"