input: Write a function to generate a random number between the given input numbers. The function should take two arguments: `start` and `stop`, and return a random integer between `start` and `stop` (inclusive).
  
  assert random_num(0, 10) >= 0
  assert random_num(0, 10) <= 10
output: import random
  
  def random_num(start, stop):
      return random.randint(start, stop)