input: 
  def generate_password() -> str:
      """Generate a random password that consists of 8 characters. The characters can 
      be any letter (uppercase or lowercase) or digit.
      >>> len(generate_password())
      8
      """
      import string
      import random
      chars = string.ascii_letters + string.digits
      return ''.join(random.choice(chars) for _ in range(8))
  
output:     import string
      import random
      chars = string.ascii_letters + string.digits
      return ''.join(random.choice(chars) for _ in range(8))