Python 点类：重载运算符实现点加法和距离计算

class Point: def init(self, x, y): self.x = x self.y = y

def __add__(self, other):
    new_x = self.x + other.x
    new_y = self.y + other.y
    return Point(new_x, new_y)

def __sub__(self, other):
    distance = ((self.x - other.x)**2 + (self.y - other.y)**2)**0.5
    return distance