code: def put_string(self, uri, text):
          
          self._collection[uri] = Template(
                                      text,
                                      lookup=self,
                                      uri=uri,
                                      **self.template_args)
docs: Place a new :class:`.Template` object into this
          :class:`.TemplateLookup`, based on the given string of
          ``text``.