56 lines
1.2 KiB
Python
56 lines
1.2 KiB
Python
# _*_ coding: utf-8 _*_
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"""
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python_metaclass.py by xianhu
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"""
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class Foo(object):
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def hello(self):
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print("hello world!")
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return
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foo = Foo()
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print(type(foo)) # <class '__main__.Foo'>
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print(type(foo.hello)) # <class 'method'>
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print(type(Foo)) # <class 'type'>
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temp = Foo # 赋值给其他变量
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Foo.var = 11 # 增加参数
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print(Foo) # 作为函数参数
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# ========================================================================
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def init(self, name):
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self.name = name
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return
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def hello(self):
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print("hello %s" % self.name)
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return
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Foo = type("Foo", (object,), {"__init__": init, "hello": hello, "cls_var": 10})
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foo = Foo("xianhu")
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print(foo.hello())
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print(Foo.cls_var)
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print(foo.__class__)
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print(Foo.__class__)
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print(type.__class__)
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# ========================================================================
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class Author(type):
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def __new__(mcs, name, bases, dict):
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# 添加作者属性
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dict["author"] = "xianhu"
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return super(Author, mcs).__new__(mcs, name, bases, dict)
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class Foo(object, metaclass=Author):
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pass
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foo = Foo()
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print(foo.author)
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