Function object_mapper

lib/sqlalchemy/orm/base.py:388–404

Given an object, return the primary Mapper associated with the object instance. Raises :class:`sqlalchemy.orm.exc.UnmappedInstanceError` if no mapping is configured. This function is available via the inspection system as:: inspect(instance).mapper Using the inspectio

(instance: _T)

def object_mapper(instance: _T) -> Mapper[_T]:
    """Given an object, return the primary Mapper associated with the object
    instance.

    Raises :class:`sqlalchemy.orm.exc.UnmappedInstanceError`
    if no mapping is configured.

    This function is available via the inspection system as::

        inspect(instance).mapper

    Using the inspection system will raise
    :class:`sqlalchemy.exc.NoInspectionAvailable` if the instance is
    not part of a mapping.

    """
    return object_state(instance).mapper


def object_state(instance: _T) -> InstanceState[_T]: