Is there a way to split the url mappings in multiple files in Google App Engine?

I want something like this:

```
from app1.controller import App1Handler
from app2.controller import App2Handler

app = webapp2.WSGIApplication([(r'/app1', App1Handler),(r'/app1', App2Handler)])

```

In App1Handler, I would like to specify some thing like this:

```
(r'/action1', Action1Handler), (r'/action2', Action2Handler)

```

In summary, when user access **/app1/action1**, *Action1Handler* has to be executed.

Django has a similar feature, where admin site urls are included in the main url patterns.

```
urlpatterns = patterns('',
    url(r'^polls/$', 'polls.views.index'),
    url(r'^admin/', include(admin.site.urls)),
)

```

Is there any such provisions available in GAE?