Middle Average - Python

Specification: Read in integers until the user enters -1. If there were at least three integers, show the middle average and also show whether the sum of values is divisible by count. If there are less than or equal to three integers, print "No average to display".

Sample I/O: Enter an integer ( 1 to exit): 1 Enter an integer (-1 to exit): 2 Enter an integer (1 to exit): 3 Enter an integer (-1 to exit): 4 Enter an integer (1 to exit): 6 Enter an integer (-1 to exit): 1 The middle average is: 3.0 The sum is not divisible by count