import flask
import flask.views

class BaseView(flask.views.MethodView):
    methods = ['GET', 'PROPFIND']

class MyView(BaseView):
    def get(self):
        return None, 200
    def propfind(self):
        return None, 200

app = flask.Flask(__name__)
app.add_url_rule('/test', view_func=MyView.as_view('test'))

for rule in app.url_map.iter_rules():
    print(rule, ','.join(rule.methods))