python类属性的概念

class 类名:

    类属性名 = 初始值

class Test(object):

    v = 0.1

    def test(self):

        pass

>Test.__dict__

>{'__module__': '__main__', '__dict__': <attribute '__dict__' of 'Test' objects>, 'v': 0.1, 'test': <function test at 0x2ee3cf8>, '__weakref__': <attribute '__weakref__' of 'Test' objects>, '__doc__': None}