将循环输出保存到变量中

Question

I have the following list

['200', '530', '540']

The size of the list is dynamic. It depends from the output of ssh_conn.rec . What I need to is to grab those values and run the following command for each value in the list

ssh_conn.send('show running-config crypto map | i 200\n')
ssh_conn.send('show running-config crypto map | i 530\n')
ssh_conn.send('show running-config crypto map | i 540\n')

I have the filling I can use loops but I am not entirely sure how to do it Below the code:

#!/usr/bin/env python

import paramiko
import time
import re

# Variables
host = xxxx = 'xxxxx'

# Create instance of SSHClient object
ssh = paramiko.SSHClient()

# Automatically add untrusted hosts
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
# Automatically add untrusted hosts
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

# initiate SSH connection
ssh.connect('xxxxx', port=22, username='xxxx', password='xxxxx', look_for_keys=False, allow_agent=False)
print "SSH COnnection established with %s" % host

# Use invoke_shell to establish an 'interactive session'
ssh_conn = ssh.invoke_shell()
print "Interactive SSH session established"

print "Give the name of the 3PPartner\n"
partner = raw_input('>')

# Commands prompted
ssh_conn.send('\n')
ssh_conn.send('enable\n')
time.sleep(.5)
ssh_conn.send('xxxxx\n')
time.sleep(.5)
ssh_conn.send("terminal pager 0\n")
time.sleep(.5)
ssh_conn.send('show running-config crypto map | i ' + str(partner) + '\n')
time.sleep(1)

output = ssh_conn.recv(65535)
print output

crypto_list = re.findall("OUTSIDEMAP (\d+) match",output)
print crypto_list

Output

python IPSEC_config_attributes.py 
SSH COnnection established with XXXX
Interactive SSH session established
Give the name of the 3PPartner

>XXXX
Type help or '?' for a list of available commands.
XXXX/pri/act> 
XXXX/pri/act> enable
Password: ************
XXXX/pri/act# terminal pager 0
XXXX/pri/act# show running-config crypto map | i XXX
crypto map OUTSIDEMAP 200 match address XXXX
crypto map OUTSIDEMAP 530 match address XXXX
crypto map OUTSIDEMAP 540 match address XXXX
XXXX/pri/act# 
['200', '530', '540']
200
530
540
Logged out of device XXXXXXXX

Thanks

Answer 1

The programming concept for being able to do something multiple times to different values is iteration. In Python, you can easily iterate over many things, such as lists, lines in a file, or, in this case, regular expression matches.

In the simplest examples of iteration, you use the "for item in list" construct to have a variable, item, that receives each value in the list. To execute a command for each match, you would use something like this:

crypto_list = re.findall("OUTSIDEMAP (\d+) match",output)
for match in crypto_list:
    ssh_conn.send('show running-config crypto map | i ' + match + '\n')