Question

I am learning how to use pexpect and i had a question. I am trying to find the version number of a remote server and based on that version number I want to choose the right driver number. I am not entirely sure how should I go about doing this. Something along the lines of a getline function. Let me know if there are any functions I could use

Answer 1

The child .before and .after properties contain the stdout before resp. after the matched expectation.

import pexpect

child = pexpect.spawn('cat /etc/issue')
child.expect('Ubuntu.*')
print(child.after)

Which of the commands requires input? If it is the driver installation you could use fabric & fexpect:

from ilogue.fexpect import expect, expecting, run

output = run('get-system-version')

prompts = []
prompts += expect('Which driver version do you want to install?',output)

with expecting(prompts):
    run('install-driver-command')