Update_by_query python API

I'm migrating some client side code (Python) that combined search with templates and update to the newest update_by_query API (https://www.elastic.co/guide/en/elasticsearch/reference/2.3/docs-update-by-query.html)

I have two questions actually:

  1. When will this API be included in the official Python client (I've just updated from 2.2.0 to 2.3.0 and appears not to support it) - also, can't find the documentation . This is by far one of the most useful API's in the project I'm working on.

  2. Whether I can use inline templates in the search body {{arg1}} {{arg2}} like I currently do with the _search/template API