input: Write a function to generate random numbers between 0 and 9 that are divisible by 3.
  
  assert generate_random_divisible_number()==0 or generate_random_divisible_number()==3 or generate_random_divisible_number()==6 or generate_random_divisible_number()==9
  assert generate_random_divisible_number()==0 or generate_random_divisible_number()==3 or generate_random_divisible_number()==6 or generate_random_divisible_number()==9
  assert generate_random_divisible_number()==0 or generate_random_divisible_number()==3 or generate_random_divisible_number()==6 or generate_random_divisible_number()==9
  assert generate_random_divisible_number()==0 or generate_random_divisible_number()==3 or generate_random_divisible_number()==6 or generate_random_divisible_number()==9
  assert generate_random_divisible_number()==0 or generate_random_divisible_number()==3 or generate_random_divisible_number()==6 or generate_random_divisible_number()==9
output: import random
  
  def generate_random_divisible_number():
      return random.choice([0, 3, 6, 9])