Parsing JSON over Bridge and return values to Arduino Yun

Hey guys,

I am trying to parse a Json string and write the values in variables on my Arduino Yun. I already managed to receive the string. I searched the web and the forum for quite some time and came across this post: Parsing JSON on Arduino Yún - #5 by system - Arduino Yún - Arduino Forum

Since I am new to python I dont really get where I have to put the py script written in the post and how to call it?

The Json string I want to parse looks like this:

[{"id":2,"timestamp":"1399572468","username":"kaul","light_on":800,"light_off":2200,"ventilation":100,"nutrient1_ml":50,"nutrient2_ml":50,"nutrient3_ml":20,"blend_ml":1000,"plant_ml":150,"moisture_min":50}]

I need the data of username, light_on, light_off etc to be stored in variables on the arduino yun to work with them.

Please help me, I'm really desperate =(

You can put your .py wherever, just know where because that path will be used when running it

python /path/to/my/script/myscript.py