subprocess.call（）输出不会改变

Question

我试图使用subprocess.call(['ping', '-n', '3','-w', '100', PingAddress]) ping IP，但是输出不会从0或1更改。我正在ping开关以查看其是否在线。如果我连接到它，它将输出1，依此类推。但是，如果我已连接，则断开连接后仍会输出1

ping = subprocess.call(['ping', '-n', '3','-w', '100', PingAddress])
while True:
    ping 
    print(ping)
    if ping != 0 and t < 3:
        t = t + 1
    elif ping == 0: #Success
        t = 0
        print(test)
    else:
        print(test)
        while True: 
            ping
            print(ping)
            if ping == 0:
                do stuff

Answer 1

ping = subprocess.call(['ping', '-n', '3','-w', '100', PingAddress])
while True:
    ping 

您仅调用一次subprocess.call。 ping变量的值在此代码中不再更改。

尝试一下：

while True:
    ping = subprocess.call(['ping', '-n', '3','-w', '100', PingAddress])
    ...