input: Write a python function to generate random IP addresses.
  assert all(0 <= int(octet) <= 255 for octet in generate_random_IP().split('.'))
  assert len(generate_random_IP().split('.')) == 4
  assert isinstance(generate_random_IP(), str)
output: import random
  
  def generate_random_IP():
      return '.'.join(str(random.randint(0, 255)) for _ in range(4))