(self)
return self.output_directory + str(random.random()) + '.png'
generate random filename
generate random filename
generate random filename
def filename(self):
        """
        generate random filename
        """
        import random
        return self.output_directory + str(random.random()) + '.png'
def filename ( self ) : import random return self . output_directory + str ( random . random ( ) ) + '.png'