Examples of calling Arduino from Python

I'm trying to write my first Python application on Linino.

I would like to write a simple python program that starts at boot time and works forever and when needed (some internal status) it has to call Arduino through the bridge to turn on/off a led.

Any example or tutorial to do that on Linino side?

Take a look at this: Using BridgeClient in Python Scripts. - Arduino Yún - Arduino Forum

Perfect Federico. It really seams what I’m looking for.
Thanks!