code: def render(self, *args, **kwargs):
          
          ns = self.default_context.copy()
          if len(args) == 1 and isinstance(args[0], MultiDict):
              ns.update(args[0].to_dict(flat=True))
          else:
              ns.update(dict(*args))
          if kwargs:
              ns.update(kwargs)
          context = Context(ns, self.charset, self.errors)
          exec self.code in context.runtime, context
          return context.get_value(self.unicode_mode)
docs: This function accepts either a dict or some keyword arguments which
          will then be the context the template is evaluated in.  The return
          value will be the rendered template.
  
          :param context: the function accepts the same arguments as the
                          :class:`dict` constructor.
          :return: the rendered template as string