However it needs some serious refactoring and since I can't code everyday for many hours (my current day job) I want to be most efficient.
When I started coding the app I lacked some knowledge. The app has CLI. I wrote custom parser for that and later found out that there are modules out there that can handle it (argparse).
Now my question is: Does it look better if I use existing module than my own custom solution?
The advantage to custom solution is that it's already written, it works well and I also made tests for it. The downside is, I'm not 100% if my custom solution is quality code.