Did you begin the Bridge in the arduino setup code ? If you don't begin it, it just doesn't work.
Check right here Getting a faster transmission using Bridge.put - #4 by system - Arduino Yún - Arduino Forum
I'm not an advanced user, neither an advanced coder, still it definitely works to send the data thru bridge from arduino up to linino, then the Python script makes the wifi connection available. (take care to change the IP adress inside of the Python code, of course).
Still it is quite slow as I explain in this topic, I tried to have it working by shutting off the console as suggested, but the wifi didn't work anymore...
Hope it does help.