Commit9531757

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add metaclass

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`25`	`25`	`*[learn python the hardway](http://learnpythonthehardway.org/book/)`
`26`	`26`	`*[Python官网教程](https://docs.python.org/2/tutorial/)`
`27`	`27`
	`28`	`+###邮件订阅`
	`29`	`+*[python weekly](http://www.pythonweekly.com/)`
`28`	`30`
`29`	`31`	`#在sublime中运行python`
`30`	`32`	`“Preference(首选项)”-----》“Browse Packages(浏览程序包)”----------》“python”，在打开的目录中修改Python.sublime-build文件类似如下`

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	`1`	`+#!/usr/bin/python`
	`2`	`+#coding:utf-8`
	`3`	`+`
	`4`	`+# type(name, bases, dict)`
	`5`	`+# name：class 的名称`
	`6`	`+# bases：class 的父类，是个 tuple 类型`
	`7`	`+# dict：class 的 namespace，表现为它的属性`
	`8`	`+`
	`9`	`+defgreet(self,word='hello'):`
	`10`	`+printword+',i am '+self.name;`
	`11`	`+`
	`12`	`+defpersonInit(self,name):`
	`13`	`+self.name=name;`
	`14`	`+`
	`15`	`+Person=type('Person', (), {'type':'anim','greet':greet,'__init__':personInit});`
	`16`	`+`
	`17`	`+p=Person('joel');`
	`18`	`+p.greet('hi');`
	`19`	`+`
	`20`	`+# __metaclass__属性`
	`21`	`+# 创建一个类的时候，可以给它添加 __metaclass__属性`
	`22`	`+# class Foo(object):`
	`23`	`+# __metaclass__ = something…`
	`24`	`+# […]`
	`25`	`+# 这样做，Python就会使用指定的元类创建Foo类。`
	`26`	`+`
	`27`	`+# 自定义元类，默认是 type`
	`28`	`+`
	`29`	`+`
	`30`	`+# 关于python的元类 https://medium.com/leeon-code/python-ca836e7960e2`

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