python - Streaming data with Flask raise RuntimeError: working outside of request context

原问题： Streaming data with Python and Flask 我需要把这段代码做下改动，如下所示，但这段代码一直报错：raise RuntimeError: working outside of request context 初看是因为 request 变量没有传到 ggg1() 函数里面去，我调试了好久也没找出原因。。。 哪位同学能看懂啥原因的，解释下怎么改，以及为啥？ 先谢过了~

代码如下：

@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)))