How can i detect that something is plugged in to the audio jack on linux with python?

I am using the python tornado webserver with tornado.io.

I want to prove that i can send events asynchronously via tornado.io.

How can i simply detect that somethi开发者_运维百科ng is plugged in the audio jack and send a message in tornado.io?

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The idea is to find what is your sound card, then google for 'jack sensing for your audio_card_number" after that it is simple

import os
os.system("your_comand")

To get you started, here is a python script which does for the ac97 card. Your solution should be similar.