def log(self, msg):

        stamp = self.store.stamp #self.stamp is last time run so don't use
        try:
            self.logFile.write("%0.4f\t%s\n" % (float(stamp), msg))
        except TypeError as ex: #if stamp is not a number then type error
            console.terse("{0}\n".format(ex))
        except ValueError as ex: #if self.logFile already closed then ValueError
            console.terse("{0}\n".format(ex))
Turns on and off the contours.
dataset/ETHPy150Open ioflo/ioflo/ioflo/base/serving.py/Server.log--crossover with--dataset/ETHPy150Open enthought/mayavi/mayavi/modules/surface.py/Surface._enable_contours_changed