Bottle example. The tpl file belongs in a views subdirectory.

hello_world.tpl

%for thing in things:
	<li>{{thing}}</li>
%end

spike.py

import bottle
@bottle.route('/')
def home_page(): 
  mythings = ['apple','orange','banana','peach']
	return bottle.template('hello_world', username='Leandro', things=mythings)

bottle.debug(True)
bottle.run(host='localhost', port=8080)