shopping_cart.py 文件源码

def define_get_google():
    @ndb.tasklet
    def get_google():
        context = ndb.get_context()
        result = yield context.urlfetch("http://www.google.com/")
        if result.status_code == 200:
            raise ndb.Return(result.content)
        # else return None

    return get_google