sqlalchemy.orm.base.InspectionAttrInfo

class documentation

class InspectionAttrInfo(InspectionAttr):

Known subclasses: sqlalchemy.ext.associationproxy.AssociationProxy, sqlalchemy.ext.hybrid.hybrid_method, sqlalchemy.ext.hybrid.hybrid_property, sqlalchemy.orm.state.InstanceState

View In Hierarchy

Adds the .info attribute to .InspectionAttr.

The rationale for .InspectionAttr vs. .InspectionAttrInfo is that the former is compatible as a mixin for classes that specify __slots__; this is essentially an implementation artifact.

Property info Info dictionary associated with the object, allowing user-defined data to be associated with this .InspectionAttr.

Inherited from InspectionAttr:

Class Variable	`__slots__`	Undocumented
Class Variable	`_is_internal_proxy`	True if this object is an internal proxy object.
Class Variable	`is_aliased_class`	True if this object is an instance of `.AliasedClass`.
Class Variable	`is_attribute`	True if this object is a Python :term:`descriptor`.
Class Variable	`is_bundle`	True if this object is an instance of `.Bundle`.
Class Variable	`is_clause_element`	True if this object is an instance of `_expression.ClauseElement`.
Class Variable	`is_instance`	True if this object is an instance of `.InstanceState`.
Class Variable	`is_mapper`	True if this object is an instance of `_orm.Mapper`.
Class Variable	`is_property`	True if this object is an instance of `.MapperProperty`.
Class Variable	`is_selectable`	Return True if this object is an instance of `_expression.Selectable`.

@util.memoized_property
info =

overridden in sqlalchemy.ext.associationproxy.AssociationProxy

Info dictionary associated with the object, allowing user-defined data to be associated with this .InspectionAttr.

The dictionary is generated when first accessed. Alternatively, it can be specified as a constructor argument to the .column_property, _orm.relationship, or .composite functions.

Changed in version 1.0.0: .MapperProperty.info is also available on extension types via the .InspectionAttrInfo.info attribute, so that it can apply to a wider variety of ORM and extension constructs.