Please use Python for this question.

Let's write our first function that returns multiple values, using a tuple. Write a function maxby(intlist) that takes a single argument intlist in the form of a list of integers, and returns a tuple (maxnum, bymargin), where maxnum is the maximum integer in the list and bymargin is the difference between maxnumand the next-highest value. In the case of a tie for the maximum value, the difference over the next highest value should be 0. In the case that intlist is an empty list, both values should be set to None; in the case of a singleton list, bymargin should be set to None.

For example: >>> print (maxby ([3, 4, 5, 7])) (7, 2) >>> print (maxby ([-1, 8, -3, 8])) (8, 0) >> print (maxby ([1])) (1, None) >> print(maxby([])) None, None)