Hey there! I'm not really clear on what you mean by "code to implement the code without the test" - the required files are pronoun_setup.rpy and pronoun_backend.rpy, and you can do whatever you like with pronoun_labels.rpy and pronoun_screens.rpy. They are there for demonstration purposes, and the screens in particular you can get rid of if you don't want them or customize them to look however you like. If you're new to Ren'Py, I suggest you read through pronoun_labels.rpy in particular and copy over the code in whichever label that does what you need for your game to your usual script.
Hope that helps!