Graham Dumpleton <graham.dumple...@gmail.com> added the comment:

Too much to grok right now.

There is already a convention for what a decorator wraps. It is __wrapped__.

https://github.com/python/cpython/blob/3405792b024e9c6b70c0d2355c55a23ac84e1e67/Lib/functools.py#L70

Don't use __func__ as that has other defined meaning in Python related to bound 
methods and possibly other things as well and overloading on that will break 
other stuff.

In part I suspect a lot of the problems here are because things like 
classmethod and functools style decorators are not proper transparent object 
proxies, which is the point of what the wrapt package was trying to solve so 
that accessing stuff on the wrapper behaves as much as possible as if it was 
done on what was wrapped, including things like isinstance checks.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45356>
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