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>>> class Foo:
        str = "I'm a static method."
        def bar():
            print Foo.str
        bar = staticmethod(bar)
>>> Foo.bar()
I'm a static method.
µÚ¶þÖÖ·½Ê½£¨classmethod£©£º
>>> class Foo:
        str = "I'm a static method."
        def bar(cls):
            print cls.str
        bar = classmethod(bar)
>>> Foo.bar()
I'm a static method.
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>>> class Foo:
        str = "I'm a static method."
        @staticmethod
        def bar():
            print Foo.str
>>> Foo.bar()
I'm a static method.
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>>> class Foo:
        str = "I'm a static method."
        @classmethod
        def bar(cls):
            print cls.str
>>> Foo.bar()
I'm a static method.
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