def showPerformance(self):
        """
        SRN.showPerformance()
        Clears the context layer(s) and then repeatedly cycles through
        training patterns until the user decides to quit.
        """
        if len(self.inputs) == 0:
            print('no patterns to test')
            return
        self.setContext()
        while True:
            BackpropNetwork.showPerformance(self)
            if self.quitFromSweep:
                return