using python 3

1. Given arbitrary 4 numbers in a list, use Python to generate a list showing the difference between each of the numbers and their mean. For example, if the four values are given in a list x = [1,2,3,4], then the answer should be [-1.5,-0.5,0.5,1.5], where-1.5 is calculated as 1-2.5 (2.5 is the mean of list x). To calculate the mean of a list, you can import a library called statistics, and use the statistics.mean(some_list) method to calculate the mean.