input: Write a function to take a list of numbers from 1 to 8 and print their cubic values.
  
  def print_cubic_values(list_numbers):
      for num in list_numbers:
          print(num**3)
  
  assert print_cubic_values([1, 2, 3, 4, 5, 6, 7, 8]) == None
output: def print_cubic_values(list_numbers):
      for num in list_numbers:
          print(num**3)