Misago/misago/sessions/middleware.py

from sessions import SessionCrawler, SessionHuman

class SessionMiddleware(object):
    def process_request(self, request):
        try:
            try:
                if request.user.is_crawler():
                    # Crawler Session
                    request.session = SessionCrawler(request)
            except AttributeError:
                # Human Session
                request.session = SessionHuman(request)
                request.user = request.session.get_user()
                
                if request.user.is_authenticated():
                    request.session.set_hidden(request.user.hide_activity > 0)
        except Exception as e:
            print e
        
    def process_response(self, request, response):
        try:
            request.session.save(request, response)
        except AttributeError:
            pass
        return response