input: Write a function to generate a random number between the given input numbers. The function should return an integer within the specified range inclusive of both endpoints.
  
  def random_num(start, stop):
      return random.randint(start, stop)
  
  assert random_num(0, 10) in range(0, 11)
  assert random_num(5, 15) in range(5, 16)
  assert random_num(20, 30) in range(20, 31)
  assert random_num(100, 110) in range(100, 111)
  assert random_num(-5, 5) in range(-5, 6)
output: def random_num(start, stop):
      return random.randint(start, stop)