Lab 5 : Find average of values in array

def setup():
   n = [ 1, 8, 7, 12, 3, 6, 9 ]
   i = 0
   sum = 0
   while(i < len(n)):
      sum = sum + n[ i ]
      i = i + 1
   aver = sum/len(n)
   print("average =", aver)

setup()