Question

问候。

我了解python不是shell。我以这个项目为借口，虽然可以增强python的功能。但是我被困住了。代码如下，带有嵌入式问题

如果重要的话，我正在使用python 3的jupyter笔记本工作，在centos7和cisco 3650交换机上运行。

import sys,re
import os
import io
import subprocess

from netmiko import ConnectHandler

# trying to replicate this:
# ssh -q super@cisco1 "show ver" | grep -i "Cisco IOS Software" | sed -n     -e 's/^.*Version //p' | sed -n -e 's/\,.*//p'
# [output is, in this case] 
# 16.3.5b

platform = 'cisco_ios'
host = 'cisco1'
username = 'super'
password = 'sillypassword'

device= ConnectHandler(device_type=platform, ip=host, username=username, password=password)
out_version=device.send_command('show version')

# here's where I would do a 
#     grep -i "Cisco IOS Software" | sed -n     -e 's/^.*Version //p' | sed -n -e 's/\,.*//p'
# 
# However I understand that python doesn't 'pipe' like shell does so I need
# embedded loops (right?).  But I don't understand how to do 
# embedded loops with a stream of text that will be coming out 
# of the device.send_command, and then save -that- into the 
# variable out_version.

device.disconnect()

我尝试了许多方法，popen，子字符串，每种方法都越来越难看。甚至脱壳并写入结果文件，然后读回grep / sed管道的输出。（这很丑陋）。必须有一个更简单的方法。有人能让我指出正确的方向吗？

非常感谢。

Answer 1

您可能应该看一下网络工具库，该库具有一小组使用Netmiko的命令行工具。这些工具之一是netmiko-grep。看到这里：

https://pynet.twb-tech.com/blog/automation/netmiko-grep.html

初学者，来自bash awk sed问题的netmiko

1 个答案: