Python3 WeChat Pay asynchronously notifies django

ask for help! WeChat Pay callback of django, there is a problem receiving asynchronous notifications.

Code first:

    -sharp
    def weChatQRCodeNotify(request):
        order_result_xml = http.request.httprequest.stream.read() -sharp
        doc = xmltodict.parse(order_result_xml) -sharpxmldict
        out_trade_no = doc["xml"]["out_trade_no"] -sharp
        -sharptodo:
        -sharp:
        -sharp
        return """
            <xml>
            <return_code><![CDATA[SUCCESS]]></return_code>
            <return_msg><![CDATA[OK]]></return_msg>
            </xml>
            """

now the problem has been locked. The first line of code
order_result_xml = http.request.httprequest.stream.read ()-sharp extracts data from the request stream
prompts http without request attribute under python3. If you directly let order_result_xml equal to the string < xml >. < / xml > , it is successful.

so what method can python3 use instead of http.request.httprequest.stream.read () ? Or what method can directly obtain the xml data from POST.

Thank you!