Daniel Roy Greenfeld: Unpack for keyword arguments

Type annotations for callables with *args and kwargs focus on the content types within the containers. Python enforces that kwargs keys must be strings, raising a TypeError otherwise. The Unpack operator allows type hinting for keyword arguments following a specific pattern. However, type annotations are primarily for static analysis by type checkers, not runtime enforcement. Consequently, incorrect argument types or missing/extra keyword arguments might not raise runtime errors. Python's runtime type evaluations rely on functions like isinstance and issubclass. The typing module is used by external tools like type checkers and IDEs for static analysis. Unpack can be used to type hint the contents of kwargs using TypedDict. Runtime errors will not occur when a type hint is incorrect. Python's typing system is distinct from runtime type checking mechanisms.