(a) In Python programming what are sentinel values used for? (2 marks) (b) Write a function called inputNums that has no arguments. This function repeatedly asks the user to input a whole number, until the user enters the letter Q.
The function returns the numbers entered as a list of integers. You may assume
the user types in the information correctly (6 marks)
(c) Write a function called DisplayPostive that accepts a list of numbers and
prints to the screen only the positive numbers. You may assume the list only
contains numbers. (4