(self, new)
When the release is higher than zero, warn all the inhabitants of
        the valley.
When the release is higher than zero, warn all the inhabitants of
        the valley.
When the release is higher than zero warn all the inhabitants of the valley .
def _release_changed(self, new):
        """When the release is higher than zero, warn all the inhabitants of
        the valley.
        """

        if new > 0:
            print 'Warning, we are releasing {} hm3 of water'.format(new)
def _release_changed ( self , new ) : if new > 0 : print 'Warning, we are releasing {} hm3 of water' . format ( new )