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