def validate(self):
        """Ensure that the ConstructResult block is valid."""
        if not isinstance(self.fields, dict):
            raise TypeError(u'Expected dict fields, got: {} {}'.format(
                type(self.fields).__name__, self.fields))

        for key, value in six.iteritems(self.fields):
            validate_safe_string(key)
            if not isinstance(value, Expression):
                raise TypeError(
                    u'Expected Expression values in the fields dict, got: '
                    u'{} -> {}'.format(key, value))
def validate ( self ) : if not isinstance ( self . fields , dict ) : raise TypeError ( u'Expected dict fields, got: {} {}' . format ( type ( self . fields ) . __name__ , self . fields ) ) for key , value in six . iteritems ( self . fields ) : validate_safe_string ( key ) if not isinstance ( value , Expression ) : raise TypeError ( u'Expected Expression values in the fields dict, got: ' u'{} -> {}' . format ( key , value ) )
Ensure that the ConstructResult block is valid.