Hi! In order to relate what has been done and learned during this fourth week, I will answer the three basic questions of every weekly check-in: 1. What did you do this week? I've migrated a few files with Python 2 syntax, like PyDoctor with conflicts in the print syntax. Then I have improved the testing scripts, in orden to make them more conventional, and to properly make the Pull Request on them 2. What is coming up next? Improve and make functional all of my testing scripts, and do the last debugging steps in my last week of my first part of GSoC program. 3. Did you get stuck anywhere? Yes, I have some problems with the syntax of the playwright scripts, because now I don't understand it very well. I will ask my mentor to improve it, during this week.