(1) Un-named arguments come before any named arguments and should be passed in order (this is familiar to programmers in almost any mainstream language).
(2) Named arguments can then follow, in whatever order.
Yes, they not complicated, and I imagine it's a non issue for most.
The interface is awkward however in that in other languages you would overload the function or pass a data structure, or reference of one, to manage additional optional parameters when you didn't want the extra arguments explicitly listed.
Python is a popular language and there are a ton of contributors who have developed third party packages. Unfortunately, these are not always well written or maintained and it can be easy to stumble across a bad one when looking for useful things. It's never fun to debug code in an unfamiliar language.
(1) Un-named arguments come before any named arguments and should be passed in order (this is familiar to programmers in almost any mainstream language).
(2) Named arguments can then follow, in whatever order.