Python

Write a function average that takes a number and returns the average of all inputs on which it has ever been called. Challenge: Can you do it without any global names besides average ? def average(n): """Return the average of all arguments ever passed to the average function. >>> average (1) 1.0 >>> average (3) 2.0 >>> average (8) 4.0 >>> average (0) 3.0 11 11 11 # Please don't call average here, or you'll confuse the automated tests