# -*- coding: utf-8 -*-

import math

class Vector:

def __init__(self, x=0, y=0):

self.x = x

self.y = y

# 字符串表示形式

def __repr__(self):

return 'Vector(%r, %r)' % (self.x, self.y)

# hypot求模

def __abs__(self):

return math.hypot(self.x, self.y)

def __bool__(self):

return bool(abs(self))

def __add__(self, other):

return Vector(self.x + other.x, self.y + other.y)

def __mul__(self, other):

return Vector(self.x*other, self.y*other)

def __eq__(self, other):

return self.x == other.x and self.y == other.y

v2 = Vector(1, 2)

v3 = Vector(2, 3)

v1 = Vector(1, 2)

print(v1 == v2)

print(v1 == v3)

x = [i for i in range(10)]

print(x)