使用Python和Flask流式传输数据会引发RuntimeError：在请求上下

从问题：

Streaming data with Python and Flask

代码运行正常,我想修改函数g(),但是请求参数不能传递给g(),它引发了一个RuntimeError：在请求上下文之外工作.

我已经调试了很长时间,我不知道如何修改它,你能帮助查看代码并解释错误背后的原因吗？

谢谢.

我的代码是：

@app.route('/username',methods=['GET','POST'])
def index():
    req =request
    print req
    print "111------------"  + req.method + "n"
    def ggg1(req):
        print req  # the req not my pass into the req....
        print "444------------" + req.method + "n"
        if req.method == 'POST':
            if request.form['username']:
                urlList = request.form['username'].splitlines()
                i = 0
                for url in urlList():
                    i += 1
                    resultStr = chkListPageContent(url,getUrlContent(url),"script")
                    print i,resultStr
                    yield i,resultStr
    print req
    print "222------------" + req.method + "n"
    return Response(stream_template('index.html',data=ggg1(req)))