def unwrap(self, value, session=None):
        ''' Validates ``value`` and unwraps it with ``ComputedField.computed_type``'''
        self.validate_unwrap(value)
        return self.computed_type.unwrap(value, session=session)
def unwrap ( self , value , session = None ) : self . validate_unwrap ( value ) return self . computed_type . unwrap ( value , session = session )
Validates ``value`` and unwraps it with ``ComputedField.computed_type``