def stepBy ( self , steps ) : self . setValue ( self . value ( ) + steps * self . singleStep ( ) )
in a python range how to set a step that increases by 1
steps value up / down by a single step . Single step is defined in singleStep () .
def stepBy(self, steps):
        """steps value up/down by a single step. Single step is defined in singleStep().

        Args:
            steps (int): positiv int steps up, negativ steps down
        """
        self.setValue(self.value() + steps*self.singleStep())