问如果路由器处于活动状态并且在python中可见，如何ssh到3台路由器中的1台

EN

def check_ping(ip_address):

    response = -1

    #Check if we can ping the IP, if we can, response will be 0,
    try:
        response = os.system("ping -c 1 {}".format(ip_address))
    except Exception as exc:
        pass

    if response == 0:
        host_is_up = True
    else:
        host_is_up = False

    return host_is_up

import os

#Open devices file
with open('routers.json') as dev_file:
  devices = json.load(dev_file)

#Function to check if ip address is pingable
def check_ping(ip_address):

    response = -1

    #Check if we can ping the IP, if we can, response will be 0,
    try:
        response = os.system("ping -c 1 {}".format(ip_address))
    except Exception as exc:
        pass

    if response == 0:
        host_is_up = True
    else:
        host_is_up = False

    return host_is_up

for device in routers['router']:
    try:
        #If device_type matches cisco_ios, do stuff
        if device['device_type'] == "cisco_ios":
            print('Connecting to device:', device['ip'])
            if check_ping(device['ip']):
                connection = netmiko.ConnectHandler(**device)
                output = net_connect.send_command("show arp")
                print(output)
    #Added the missing except
    except:
        pass

Connecting to device: 192.168.100.10
.....