def join_room(room):
 socketio = flask.current_app.extensions['socketio']
 socketio.server.enter_room(flask.request.sid, room, namespace=flask.request.namespace)

def join_room ( room ) : socketio = flask . current_app . extensions [ 'socketio' ] socketio . server . enter_room ( flask . request . sid , room , namespace = flask . request . namespace )
join a room .