input: def generate_number() -> int:
      """ Generate a unique 6 digit number.
      >>> generate_number() in range(100000, 1000000)
      True
      """
      return random.randint(100000, 999999)
output:     
  import random
  
  def generate_number() -> int:
      """ Generate a unique 6 digit number.
      >>> generate_number() in range(100000, 1000000)
      True
      """
      return random.randint(100000, 999999)
  