@wmoss then I really appreciate your time and I'm grateful for your patience, but I cannot try to work with someone who disagrees so much about testing, I know you are wrong about it because I haven't really seen any of your repositories with 100% of test coverage, in the other hand this is how I code and I don't only do that for the company I work for, but also in my personal projects. So from my own experience, 100% does not guarantee  that will be no bugs, but guarantee that I don't have to worry about them, because the whole codebase is already tested, and any bugs that show up can be fixed under minutes (through adding more tests), guaranteeing it will never happen again.

Last but not least, diesel is a pretty decent project, the idea behind it is really amazing, but the implementation looks like it was writen by awesome computer scientists, but that have very little experience wth python itself.
I was excited to share some of my knowledge with you guys, but now I just wish you luck.

Best regards,
Gabriel Falcão