@web.removeslash
    @web.authenticated
    def get(self):
        self.render('user/template/preferences.html')
Checks that value is non-empty and of the right type.
dataset/ETHPy150Open argoroots/Entu/app/user/user.py/ShowUserPreferences.get--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/ext/bulkload/__init__.py/Validate