Ask HN: Archive a large directory while excluding a subdirectory

I want to back up my Unity project while excluding the Library folder ( Unity essentially copies all of your assets into it).

Right now I just use 7Zip , but this doesn't allow me to exclude sub directories I don't need.

Late last night I actually thought of programming something in Python to do this, I would love to have a little quirky GUI here to schedule these archive backups.