code: def randomString(size: int = 20,
                   chars: str = string.ascii_letters + string.digits) -> str:
      
  
      return ''.join(sample(chars, size))
docs: Generate a random string of the specified size.
  
      Ensure that the size is less than the length of chars as this function uses random.choice
      which uses random sampling without replacement.
  
      :param size: size of the random string to generate
      :param chars: the set of characters to use to generate the random string. Uses alphanumerics by default.
      :return: the random string generated