My permanent instructions to Claude are:

* Always strongly type, for local variables, method parameters, and return types

* Avoid Any unless absolutely required

* hasattr() and get() are often code smells; if the type can be known, use that type

* Use beartype for all methods.

I _love_ beartype and want to plug it to everyone on HN: https://github.com/beartype/beartype

I'm building my own coding agent, like Claude, and it is built with opinionated style. Strongly typing Python and using beartype are what it will try to do unless the user specifies otherwise.