subprocess.call()输出不会更改

Question

我正在尝试使用subprocess.call(['ping', '-n', '3','-w', '100', PingAddress]) ping一个IP，但输出不会从0或1更改。我正在ping一台交换机，看看它是否在线。如果我连接到它，它会输出1，依此类推。但是如果我是连接的，那么断开它仍然会输出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 

您只能调用subprocess.call一次。在此代码中，ping变量的值再也不会更改。

试试这个：

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