input: from typing import List
  
  def generate_random_number() -> int:
      """ Generate a random 6-digits number.
      >>> generate_random_number()
      Output should be any 6-digit number between 100000 and 999999.
      """
      import random
      number = random.randint(100000, 999999)
      return number
output:     import random
      number = random.randint(100000, 999999)
      return number