Streaming templating languages for use as WSGI body.

[Alice Bevan–McGregor]

Howdy!

I'm trying to find a templating engine whose templates can be consumed 
directly as a WSGI response body iterable.  So far I haven't been very 
successful with Google; the engines I've found universally generate a 
monolithic rendered string.

Bonus points for templating engines that support flush() mechanics 
internally to allow developer-chosen 'break points' in the iterable.  
Bonus points++ if it can somehow calculate the response body length 
without generating the whole thing monolithically.  ;)

	- Alice.