# __author: "ZXYang"
# date: 2020/11/29

"""
__new__方法

"""


class Func(object):

    def __init__(self, name):
        self.name = name
        print("这是__init__方法")

        # new方法先执行

    def __new__(cls, *args, **kwargs):
        print("这是__new__方法")
        return super().__new__(cls)


# he = Func("LI")
# print(he.name)

"""

单例模式

"""


class Test(object):
    # count = 0
    isinstance = None

    def __new__(cls, *args, **kwargs):
        if not cls.isinstance:
            cls.isinstance = object.__new__(cls)
            # cls.count += 1
            return cls.isinstance
        else:
            return cls.isinstance


h1 = Test()
h2 = Test()
h3 = Test()
print(id(h1), id(h2), id(h3))