python question 2

The arithmetic mean of a series x of n numbers is defined as: Write a function arithmetic_mean(l) that takes a non-empty list I and returns its arithmetic mean as a floating-point number In def arithmetic_ mean (1): # Your code here return m In t : arithmetic mean([5, 7, 9]) 7.0 In t arithmetic mean (13.2, 2.81)- 3.0 In [ ]: arithmetic-mean( [42])-42.0