Traceback (most recent call last):
File "D:/画图/s.py", line 55, in
star.setx(star.xcor() - 3 * star.speed())
File "D:\python\lib\turtle.py", line 1809, in setx
self._goto(Vec2D(x, self._position[1]))
File "D:\python\lib\turtle.py", line 3159, in _goto
screen._pointlist(self.currentLineItem),
File "D:\python\lib\turtle.py", line 756, in pointlist
cl = self.cv.coords(item)
File "", line 1, in coords
File "D:\python\lib\tkinter_init.py", line 2763, in coords
self.tk.call((self._w, 'coords') + args))]
_tkinter.TclError: invalid command name ".!canvas"