Module factory 

Registries which resolve Python objects into owned Rust factories.

A Python caller cannot hand ownership of a #[pyclass] instance to Rust, so subsystems which let Python install a backing accept a factory object instead. Each subsystem keeps a FactoryRegistry of extractors keyed by Python class name, then resolves an owned Box<dyn Factory> from an arbitrary Python object at configuration time.

Structs

FactoryRegistry

Registry of Python factory extractors keyed by Python class name.

Type Aliases

FactoryExtractor

Function type for extracting a Python object into a boxed factory.