Python 龙卷风流请求正文

Question

文档 (http://www.tornadoweb.org/en/stable/web.html#tornado.web.stream_request_body) 是这样写的 There is a subtle interaction between data_received and asynchronous prepare: The first call to data_received may occur at any point after the call to prepare has returned or yielded. 但是如果我尝试

@tornado.web.stream_request_body
class HTTPHandler(tornado.web.RequestHandler):
    @tornado.gen.coroutine
    def prepare(self):
        yield long_time_operation()

    @tornado.gen.coroutine
    def data_received(self, chunk):
        print("Data received")

data_received 在准备 returns 之前不要调用（不让步）。为什么？

Answer 1

似乎文档有误，我已经提交了一个错误。

https://github.com/tornadoweb/tornado/issues/1933

Python 龙卷风流请求正文

Python tornado stream request body

python

tornado