sqlalchemy.orm.exc.UnmappedInstanceError

exception documentation

class UnmappedInstanceError(UnmappedError): (source)

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An mapping operation was requested for an unknown instance.

Method __init__ Undocumented
Method __reduce__ Undocumented

Inherited from SQLAlchemyError (via UnmappedError, InvalidRequestError):

Method __str__ Undocumented
Method _message Undocumented
Method _sql_message Undocumented

Inherited from HasDescriptionCode (via UnmappedError, InvalidRequestError, SQLAlchemyError):

Instance Variable code Undocumented
Method _code_str Undocumented
@util.preload_module('sqlalchemy.orm.base')
def __init__(self, obj: object, msg: Optional[str] = None): (source)
overrides sqlalchemy.exc.HasDescriptionCode.__init__

Undocumented

def __reduce__(self) -> Any: (source)

Undocumented