translate the following code from ruby to python：
@TESTER.start_traffic
wait 4
@TESTER.stop_traffic 
SYS.wait_operate(30,0){
                  rs = @RTA.mntDev.check_cpu_usage(:slot => @port1_rta_toTester.bid)
                  }
expect("1、两个用户使用arp探测成功，用户保持在线；") {
rs = @RTA.aaa.get_access_user_detail(:userName=>@nodomain)
 assert_true(rs.include?("Total: 2"),"两个用户上线不成功.") 
@RTA.aaa.check_access_user_detail(
                    :showType  => @showTypemacAddr,
                    :showValue => @user1MacHex,
                    :macAddr   => @user1MacHex,
                    :userName=>@nodomain,
                    :accesstype=> @accessType[2]
                    )  
operate("2、等待客户端重认证，等待探测周期，有结果1") {
            #等待客户端重认证
            SYS.wait_operate(30,0){
                  rs = @RTA.mntDev.check_cpu_usage(:slot => @port1_rta_toTester.bid)
                  }} Your answer should have exactly 3 paragraphs. Make sure that the last paragraph starts with the word "proactive" and that each paragraph is separated by two new lines.
user