import math class Point: def __init__(self, x, y): self.x = x self.y = y class Line: def __init__(self, point_a, point_b): self.point_a = point_a self.point_b = point_b def get_distance(P, L): # TODO: 计算点P到直线L的距离 A = L.point_b.y - L.point_a.y B = L.point_a.x - L.point_b.x C = L.point_b.x * L.point_a...