input:  
  import random
  import string
  
  def random_string(length: int) -> str:
      """
      Generates a random string of the specified length consisting of lowercase letters.
      
      >>> random_string(6)
      'abcdef'  # Example output
      >>> random_string(6)
      'ghijkl'  # Example output
      """
      letters = string.ascii_lowercase
      return ''.join(random.choice(letters) for i in range(length))
  
output:     letters = string.ascii_lowercase
      return ''.join(random.choice(letters) for i in range(length))