Parse Cisco show commands using Python: RegEx Parser Part 4/9: Version Hostname Model Parser

Published: 28 March 2021
on channel: NetworkEvolution

2,904

#RegexTutorial #ParseConfig #RegexBeginner

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Script
-------
#! /usr/local/Python_envs/Python3/bin/python3
import re

version_pattern = re.compile(r'Cisco .+ Software, Version (\S+)\n')
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 (.*)')

with open('01_show_version_output.txt', 'r') as file:
output = file.read()

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))
--------

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