input: 
  import random
  
  def generate_random_6_digit_number() -> int:
      """Generates a random 6-digit number.
      >>> generate_random_6_digit_number()
      (output will vary, but should be a 6-digit number)
      """
      return random.randint(100000, 999999)
  
output:     return random.randint(100000, 999999)