input: Write a function to compute the cubic values of a list of numbers from 1 to 8 and print each cubic value.
  
  assert cubic_values([1, 2, 3, 4, 5, 6, 7, 8])==[1, 8, 27, 64, 125, 216, 343, 512]
  assert cubic_values([1, 2, 3])==[1, 8, 27]
  assert cubic_values([1, 2])==[1, 8]
  assert cubic_values([1])==[1]
  assert cubic_values([])==[]
output: def cubic_values(numbers):
      return [num ** 3 for num in numbers]