Hope you learned dict until now ;)

no

Wonderful!

It's "-" that can't use

Thank you for answer, I'm clear now :)

Create a function that returns the average of an array of numbers ("scores"), rounded to the nearest whole number. You are not allowed to use any loops (including for, for/in, while, and do/while loops).
That's how round works in Python 3 read here

Tere may a bug in testcase, like:
Testing for [2, 452, 5, 8, 92, 46, 3, 68]
It should work for random inputs too: 85 should equal 84

the sum of [2, 452, 5, 8, 92, 46, 3, 69] equal to 676, and the average is 84.5.