fix python staticmethod

[yoloyyh]

Summary

This PR fixes/implements the following bugs/features

• [ ✅] Bug 1
• Bug 2
• Feature 1
• Feature 2
• Breaking changes

#510

Fixes python staticmethod

[Hackerl]

需要使用 self：

    class StaticMethod(object):
        _func = staticmethod(smith_wrapper)

        def __call__(self, *args, **kwargs):
            return self._func(*args, **kwargs)

    return StaticMethod() if static else smith_wrapper

此处错误导致 func 实际是 smith_hook 的参数 func。

[Hackerl]

    class StaticMethod(object):
        _func = staticmethod(smith_wrapper)

        def __call__(self, *args, **kwargs):
            return self._func(*args, **kwargs)

    return StaticMethod() if static else smith_wrapper