import bottle

from bottle import jinja2_template as template
from jinja2 import Environment


def cut(value):
    return value[:7]

env = Environment()
env.filters['ss'] = cut


@bottle.route('/')
def test():
    foo = "klsjadlkjdalkdjdaskldjad007"
    return template('''

foo value: {{ ss(foo) }}
and {{ foo|ss }}
''', foo=foo)


bottle.run(host='localhost', port=9090, debug=True, reloader=True)