Method __neg__

tools/python-3.11.9-amd64/Lib/turtle.py:265–266

(self)

    def __sub__(self, other):
        return Vec2D(self[0]-other[0], self[1]-other[1])
    def __neg__(self):
        return Vec2D(-self[0], -self[1])
    def __abs__(self):
        return math.hypot(*self)
    def rotate(self, angle):