code: def escape(s, quote=True):
      
      s = s.replace("&", "&amp;") # Must be done first!
      s = s.replace("<", "&lt;")
      s = s.replace(">", "&gt;")
      if quote:
          s = s.replace('"', "&quot;")
          s = s.replace('\'', "&#x27;")
      return s
docs: Replace special characters "&", "<" and ">" to HTML-safe sequences.
      If the optional flag quote is true (the default), the quotation mark
      characters, both double quote (") and single quote (') characters are also
      translated.