Classe « TypeDecorator »

Méthode sqlalchemy.TypeDecorator.compare_values

Signature de la méthode compare_values

def compare_values(self, x, y) 

Description

compare_values.__doc__

Given two values, compare them for equality.

        By default this calls upon :meth:`.TypeEngine.compare_values`
        of the underlying "impl", which in turn usually
        uses the Python equals operator ``==``.

        This function is used by the ORM to compare
        an original-loaded value with an intercepted
        "changed" value, to determine if a net change
        has occurred.