human
Complete the below
def leave_room(room, sid=None, namespace=None):

    ''''Leave a room.
    This function removes the user from a room, under the current namespace.
    The user and the namespace are obtained from the event context. Example::
    @socketio.on(\'leave\')
    def on_leave(data):
    username = session[\'username\']
    room = data[\'room\']
    leave_room(room)
    send(username + \' has left the room.\', room=room)
    :param room: The name of the room to leave.
    :param sid: The session id of the client. If not provided, the client is
    obtained from the request context.
    :param namespace: The namespace for the room. If not provided, the
    namespace is obtained from the request context.'
    '''

=====
What is a the Python code you requested?
assistant
#Here is the Python code you requested.
    socketio = flask.current_app.extensions['socketio']
    sid = (sid or flask.request.sid)
    namespace = (namespace or flask.request.namespace)
    socketio.server.leave_room(sid, room, namespace=namespace)