input: Write a function to calculate the cube of an integer input from the user. The function should prompt the user for a number, compute its cube, and print the result.
  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() is None
  assert calculate_cube() is None
output: def calculate_cube():
      number = int(input("Please enter a number: "))
      cube = number**3
      print("The cube of the number is: " + str(cube))