Ping routers

Routers.py

#====================================================================================
#Ping function
def ping_func(lan_list, site, site_name_dict, net_connect, results, mgmt_ip):
    ping_results_list = []
    for ip in lan_list:
        ip_addr = ip
        remote_site = site_name_dict[ip]
        if site == remote_site:
            print ('Remote site: ' + site +' is same as local site :' + remote_site + ',' + ' skipping...')
            latency = 0
            ping_results_list.append(str(latency))
            continue
        print ('Pinging: ' + remote_site + ' on ip:', ip_addr)
        ping_result = net_connect.send_command('ping ' + ip_addr)


        for line in ping_result.splitlines():
            if 'avg' in line:
                split_line = line.split('/')
                latency = split_line[-2]
                print ('Latency from ' + site + ' to ' + remote_site+ ' is: ', latency)
                continue

            if 'Success rate is 0 percent' in line:
                latency = 'timeout'
                print ('Latency from ' + site + ' to ' + remote_site+ ' is: ', latency)

        ping_results_list.append(latency)
        print (ping_results_list)

    csv_row = ','.join(ping_results_list)
    results.write(site + ',' + csv_row + '\n')
    return



#=======================================================================
#open device_file to retrieve a list of routers to run discovery on
with open ('router_list') as devices:
    devices_list = devices.read().splitlines()

#Create a dict of all of the site IPs and sites
lan_list = []
site_list = []
site_name_dict = {}
for line in devices_list:
    device = line.split(',')
    lan_list.append(device[1])
    site_list.append(device[0])
    site_name_dict[device[1]] = device[0]

#Take site list and turn it into a string to be used as top row of CSV
top_row = ', '.join(site_list)
results.write(',' + top_row + '\n') #Write the sites to top row of CSV

for line in devices_list:
    device = line.split(',')
    site = device[0]
    #lan_ip = device[1]
    mgmt_ip = device[1]
    print ('Site is: ', site)
    #print ('LAN ip is: ', lan_ip)
    print ('Management IP is: ', mgmt_ip)
    print ('-----------------------------------')
    ios_device = {
        'device_type': 'cisco_ios',
        'ip': mgmt_ip,
        'username': username,
        'password': password,
        'global_delay_factor': 4,
        'session_log': 'session_output_ssh'
    }

    try:
        net_connect = ConnectHandler(**ios_device)
    except (AuthenticationException):
	**remove for brevity***


    #Call ping function, pass in current router details, plus site name
    ping_func(lan_list, site, site_name_dict, net_connect, results, mgmt_ip)



#close results file
results.close()