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# -*- coding: utf-8 -*-
from collections import namedtuple
class Coordinate(namedtuple("Coordinate", ["x", "y"])):
def __sub__(self, other: "Coordinate") -> "Coordinate":
return Coordinate(self.x - other.x, self.y - other.y)
def __add__(self, other: "Coordinate") -> "Coordinate":
return Coordinate(self.x + other.x, self.y + other.y)
def manhattan_distance(self, other: "Coordinate") -> int:
return abs(self.x - other.x) + abs(self.y - other.y)
@property
def polarity(self) -> "Coordinate":
try:
px = abs(self.x) / self.x
except ZeroDivisionError:
px = 0
try:
py = abs(self.y) / self.y
except ZeroDivisionError:
py = 0
return Coordinate(
px,
py,
)
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