Python錯誤ValueError：視圖函數未返回響應

Question

我的應用程序在運行URL http：// localhost：81 / ip_update / 00178r時出現錯誤ValueError：View函數未返回響應。 我無法解決，如果有人可以幫助我，我將非常感謝

def ip_update (client):
    ip = request.remote_addr
    if 'r' in client:
        customer = cliente.rstrip ('r')
        urllib2.urlopen ('http://localhost:85/administration/ip_update/' + client + '/' + ip)
        time.sleep (3)
    else:
        server = 'localhost'
        port = 3306
        login = root
        password = 'password'

        mdb.connect con = (host = server, port = port = user login, passwd = password, use_unicode = True)
        cur = con.cursor ()

        cur.execute ("SELECT FROM tar_cliente ebas.tarefa WHERE tar_status = 'processing' and tar_cliente = '" + client $

        if cur.rowcount == 0:
            Data2 data = ()
            server = data2 ['clients'] [customer] ['server']
            urllib2.urlopen ('http://' + server + '/administration/ip_update/' + client + '/' + ip)
            time.sleep (3)
            return 'request for ip received for updating client code' + client
        else:
            return 'denied updating, client operation underway'

Answer 1

if測試為true， if函數返回None ：

if 'r' in client:
    customer = cliente.rstrip ('r')
    urllib2.urlopen ('http: // localhost: 85 / administration / ip_update /' + client + '/' + ip)
    time.sleep (3)

在這種情況下，您也需要返回響應。 這里沒有必要使用睡眠； 您要做的只是延遲將某些內容返回瀏覽器。