input: Write a function to generate random numbers between 0 and 9 that are divisible by 3. The function should continue generating numbers until it finds one that is divisible by 3 and then return that number.
  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():
      while True:
          num = random.randint(0, 9)
          if num % 3 == 0:
              return num