1037. 有效的回旋镖

class Solution:
    def isBoomerang(self, points: List[List[int]]) -> bool:
        [[x0, y0], [x1, y1], [x2, y2]] = points
        if (x0, y0) == (x1, y1) or (x1, y1) == (x2, y2) or (x0, y0) == (x2, y2):
            return False

        if (y1 - y0) * (x2 - x0) == (y2 - y0) * (x1 - x0):
            return False
        return True