input: Write a function to take an integer input from the user and print its cube.
  
  def calculate_cube():
      number = int(input("Please enter a number: "))
      cube = number**3
      print("The cube of the number is: " + str(cube))
  
  assert calculate_cube()=="Please enter a number: The cube of the number is: " + str(input**3)
output: def calculate_cube():
      number = int(input("Please enter a number: "))
      cube = number**3
      print("The cube of the number is: " + str(cube))