code: def optimizely(parser, token):
      
      bits = token.split_contents()
      if len(bits) > 1:
          raise TemplateSyntaxError("'%s' takes no arguments" % bits[0])
      return OptimizelyNode()
docs: Optimizely template tag.
  
      Renders Javascript code to set-up A/B testing.  You must supply
      your Optimizely account number in the ``OPTIMIZELY_ACCOUNT_NUMBER``
      setting.