vps_show.py

#! /usr/local/Python_envs/Python3/bin/python3
import paramiko
import time
from getpass import getpass
import re

version_pattern = re.compile(r'Cisco .+ Software, Version (\S+)')
model_pattern = re.compile(r'cisco (\S+).+bytes of memory\.')
serial_no_pattern = re.compile(r'Processor board ID (\S+)')
uptime_pattern = re.compile(r'(.+) uptime is (.*)')


host = "ip"
username = "username"
password = "password"
lab_csr = {
    'host': host,
    'username': username,
    'password': password
}
devnet_csr = {
    'host': lab_csr['host'],
    'username': lab_csr['username'],
    'password': lab_csr['password']
}


def cisco_parse_version(host, username, password):
    try:
        print(f"\n{'#' * 55}\nConnecting to the Device {host}\n{'#' * 55} ")
        SESSION = paramiko.SSHClient()
        SESSION.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        SESSION.connect(host, port=22,
                        username=username,
                        password=password,
                        look_for_keys=False,
                        allow_agent=False)

        DEVICE_ACCESS = SESSION.invoke_shell()
        DEVICE_ACCESS.send(b'term length 0\n')
        DEVICE_ACCESS.send(b'show ver\n')
        time.sleep(1)
        output = (DEVICE_ACCESS.recv(65000).decode('ascii'))

        version_match = version_pattern.search(output)
        print('IOS Version'.ljust(18)+': '+version_match.group(1))

        model_match = model_pattern.search(output)
        print('Model '.ljust(18)+': '+model_match.group(1))

        serial_no_match = serial_no_pattern.search(output)
        print('Serial Number '.ljust(18)+': '+serial_no_match.group(1))

        uptime_match = uptime_pattern.search(output)
        print('Host Name '.ljust(18)+': '+uptime_match.group(1))
        print('Device Uptime '.ljust(18)+': '+uptime_match.group(2))

        print(f"\n{'#' * 55}\nFinished Executing Script\n{'#' * 55} ")
        SESSION.close()

    except paramiko.ssh_exception.AuthenticationException:
        print("Authentication Failed")
    except AttributeError:
        print("Parsing Error, Please check the command")
    except:
        print("Can not connect to Device")


cisco_parse_version(**devnet_csr)