code: def _unescape(self, msg):
          
          if isinstance(msg, (int, float, long)):
              return msg
  
          unescaped = ''
          i = 0
          while i < len(msg):
              unescaped += msg[i]
              if msg[i] == '"':
                  i+=1
              i+=1
          return unescaped
docs: Removes double quotes that were used to escape double quotes. Expects
          a string without its delimiting quotes, or a number. Returns a new
          unescaped string.