Hi Diego,
No you should not. You simply do not have the time to both write a book and write and test code in the timeframe we have. Your focus should be on the book itself, the code examples can wait. I think chasing after code is a big mistake this early in the life cycle of writing a book.
I guess we all can write code. Anyone can. The challenge with PragProWriMo is quite different: to focus on writing a book.
Bob