20???.py 文件源码

def ajax_endpoint(environ, start_response):
    # WSGI????????????????????????????HTTP???
    # ??????WSGI?????HTTP?????????????environ——??????
    # HTTP?????dict???start_response——????HTTP??????
    status = '200 OK'
    headers = [
               ('Content-Type', 'application/json')
               ]
    start_response(status, headers)

    while True:
        try:
            datum = data_source.get(timeout=5)
            yield json.dumps(datum) + '\n'
        except Empty: pass