input: Write a function to generate a list of numbers from 0 to 50 that are divisible by both 3 and 5. Return the list as the output.
  assert generate_divisible_list()==[0, 15, 30, 45]
output: def generate_divisible_list():
      return [i for i in range(51) if i % 3 == 0 and i % 5 == 0]