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