python question help...... please with specified steps

The span, or range of a list of numbers is the difference between the largest and smallest elements of the list. Write a Python function span(l) that takes a non empty list I of numbers and returns the span: In def span (1): # Your code here. return s In 1: span (I4, 2, 6, 9, 6])7 In [ ]: span ( [-3.4, 2.8, 3)) --6.4 In [ J: span ( [5])0