Examples b and c on test #6 is something you should NEVER do in Python. Using "is" checking for integers is a huge no-no, and will only work for smaller integer

Examples b and c on test #6 is something you should NEVER do in Python. Using "is" checking for integers is a huge no-no, and will only work for smaller integers (I think between -5 and 256) that are cached by the interpreter. "is" does identity checking, not equality checking. >>> a = 500 >>> b = 500 >>> a is b False >>> a == b True >>> a = 2 >>> b = 2 >>> a is b True >>> a == b True