code: def _send_post(self, blogname, params):
          
          url = "/v2/blog/{}/post".format(blogname)
          valid_options = self._post_valid_options(params.get('type', None))
  
          if len(params.get("tags", [])) > 0:
              # Take a list of tags and make them acceptable for upload
              params['tags'] = ",".join(params['tags'])
  
          return self.send_api_request("post", url, params, valid_options)
docs: Formats parameters and sends the API request off. Validates
          common and per-post-type parameters and formats your tags for you.
  
          :param blogname: a string, the blogname of the blog you are posting to
          :param params: a dict, the key-value of the parameters for the api request
          :param valid_options: a list of valid options that the request allows
  
          :returns: a dict parsed from the JSON response