python ping监控服务器

#pip install requests
import subprocess, platform
import requests
import time
def ping(host):
    """
    Returns True if host responds to a ping request
    """
    # Ping parameters as function of OS
    ping_str = "-n 1" if  platform.system().lower()=="windows" else "-c 1"
    args = "ping " + " " + ping_str + " " + host
    need_sh = False if  platform.system().lower()=="windows" else True

    # Ping
    return subprocess.call(args, shell=need_sh) == 0

on_state = 1
off_state = 1


def watch(host):
  global on_state, off_state
  while True:
    get_ping = ping(host)
    if get_ping:
        ##如果检测到在线，且离线状态为真(off_state>0)，发送上线信号，并将离线状态重置为假（=0）
        if off_state > 0:
            off_state = 0
            requests.get("https://sc.ftqq.com/[SCKEY(登入后可见)].send?text=服务器上线！")
        else:
            on_state += 1
    else:
        ##如果检测到连续离线五次，且在线状态为真(off_state>0)，发送离线信号，并将在线状态重置为假（=0）
        if on_state > 0 and off_state >= 5:
            on_state = 0
            requests.get("https://sc.ftqq.com/[SCKEY(登入后可见)].send?text=服务器离线！")
        else:
            off_state += 1
    time.sleep(10)

watch('www.baidu.com')