A touch of class

Here is sample program illustrating what could come next.

class amazing(RefurbishedRobot):
    def diag(self):
        self.set_trace_style(1, 'white')
        self.turn_left()
        self.move()
        self.turn_right()
        self.move()
        self.set_trace_style(1, 'sea green')

Magician = amazing()
Magician.move()
Magician.move()
Magician.diag()
Magician.diag()
Magician.move()
Magician.move()
Magician.turn_off()

magic

The following example could be extended so that almost all the grey dotted lines in the Robot's world are erased.

class eraser(RefurbishedRobot):
    def __init__(self):
        RefurbishedRobot.__init__(self)
        self.set_trace_style(5, 'white')

Sneaky = eraser()
while Sneaky.front_is_clear():
    Sneaky.move()
Sneaky.turn_off()

eraser