code: def truncate_string(text, strip_html=True, chars=255, truncate='…', at_word_boundary=False):
      
      if strip_html:
          text = strip_tags(text)
      text = text.replace('\n', ' ').replace('\r', '')
      text = ' '.join(text.split())
      if at_word_boundary:
          if len(text) > chars:
              text = text[:chars].rsplit(' ', 1)[0] + truncate
      else:
          text = Truncator(text).chars(chars, html=False, truncate=truncate)
      return text
docs: Truncate a string to a certain length, removing line breaks and mutliple
      spaces, optionally removing HTML, and appending a 'truncate' string.
  
      Keyword arguments:
      strip_html -- boolean.
      chars -- Number of characters to return.
      at_word_boundary -- Only truncate at a word boundary, which will probably
          result in a string shorter than chars.
      truncate -- String to add to the end.