On Feb 28, 2017, at 8:14 PM, 语言破碎处 <mlet_it_bew@126.com> wrote:

We need not care other functions, just the "current" one.
    Other functions are definitely out of our control.
My last example distinguish 3 cases:
    self.f()            # object/overloaded version
    __class__.f(self)   # decorated version
    __this_func__(self) # prime version

If your decorator uses `functools.wraps` or `functools.update_wrapper` (it should, for lots of reasons, and many, perhaps most, third party wrappers do), then you can access the wrapped function as `decorated.__wrapped__`.

See https://docs.python.org/3/library/functools.html#functools.update_wrapper