在调用self对象时，本类调用用Win32Info().collect()

import platform

class Test:
    def test(self):
        func = getattr(self,platform.system().lower())
        return func() #一定要返回func，不能func()

    @staticmethod
    def windows():
        from plugins.collect_windows_info import Win32Info
        return Win32Info().collect() #在调用self对象时，本类调用用Win32Info().collect()
    @staticmethod
    def linux():
        return 'OK2'



ob = Test()
print(ob.test())