Python之Flask--metaclass

最新推荐文章于 2025-05-23 13:15:40 发布

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"""
用来指定当前类是由谁创建的(默认Type创建)
"""
from flask import Flask
import metaclass


class MyType(type):
    def __init__(self, *args, **kwargs):
        print("init")
        super(MyType, self).__init__(*args, **kwargs)

    def __call__(self, *args, **kwargs):
        print("call本质会调用类的__new__然后调用类的__init__")
        return super(MyType, self).__call__(*args, **kwargs)


# class Foo(metaclass=MyType):  # 执行init方法
#     pass
#
#
# class Bar(Foo):  # 创建类
#     pass


XXX = MyType("XXX", (object,), {})  # 创建了类
ff = XXX()

# obj1 = Bar()
#
# obj = Foo()  # 执行call方法