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

"""

Created on Thu Sep 6 13:58:40 2018

@author: 123

"""

import sys

import copy

class Point():

def __init__(self, x, y):

self.x = x

self.y = y

@classmethod

def new_object(cls, x, y):

return cls(x, y)

def __repr__(self):

return f'x:{self.x}, y:{self.y}'

def make_object(Class, *args, **kwargs):

return Class(*args, **kwargs)

point1 = Point(1, 2)

point2 = eval(f"{'Point'}({2},{4})")

# point2 = eval('{}({},{})'.format('Point', 2, 4))

point3 = getattr(sys.modules[__name__], 'Point')(3, 6)

point4 = globals()['Point'](4, 8)

point5 = make_object(Point, 5, 10)

point6 = copy.deepcopy(point5)

point6.x = 6

point6.y = 12

point7 = point1.__class__(7, 14)

point8 = Point.new_object(8, 16)

# 闭包延迟绑定：闭包中用到的变量的值，是在内部函数被调用的时候才查询得到的

def squares():

return [lambda x, i=i: i**x for i in range(3)]

'''

for square in squares():

print(square(2))

'''