Python案例-开发之路-设计模式-单例模式

#!/usr/bin/env python# -- coding = 'utf-8' --# Author Allen Lee# Python Version 3.5.1# OS Windows 7#设计模式，单例模式，单实例class Foo:instance = Nonedef __init__(self,name):self.name = name

白金牧场

714人浏览 · 2016-07-01 22:59:45

白金牧场 · 2016-07-01 22:59:45 发布

#!/usr/bin/env python
# -- coding = 'utf-8' --
# Author Allen Lee
# Python Version 3.5.1
# OS Windows 7
#设计模式，单例模式，单实例
class Foo:

    instance = None

    def __init__(self,name):
        self.name = name

    @classmethod
    def get_instance(cls):

        if cls.instance:
            return cls.instance
        else:
            obj = cls('alex')
            cls.instance = obj
            return obj

obj1 = Foo.get_instance()
print(obj1)
obj2 = Foo.get_instance()
print(obj2)