sqlalchemy.orm.state._InstallLoaderCallableProto

class documentation

class _InstallLoaderCallableProto(Protocol[_O]): (source)

used at result loading time to install a _LoaderCallable callable upon a specific InstanceState, which will be used to populate an attribute when that attribute is accessed. Concrete examples are per-instance deferred column loaders and relationship lazy loaders.

Method __call__ Undocumented

def __call__(self, state: InstanceState[_O], dict_: _InstanceDict, row: Row[Any]): (source) ¶

Undocumented