Python Development

Reusable Python code and test rules.

Target Python version limits syntax and standard-library typing.

Types, Structures, and Models

For types, models, validation, adapters, and typed tests: read structure-and-models.md.

Exceptions

Existing exception layout first. Else nearest domain/package exceptions.py.

No reusable exceptions inside workflow, loader, client, factory, type, or utility modules.

Branching

Use match/case when supported and structural branches clearer. Keep priority guards as if.