[IPython-dev] 'Unwrapping' decorated functions in IPython

[Thomas Kluyver]

Hi Michele,

Ben's been working on getting IPython's "func??" introspection to
automatically unwrap functions decorated with @decorator. (
https://github.com/ipython/ipython/pull/578 )

If a function is wrapped in several layers, f.__wrapped__ refers to the
object one level below. This is in contrast to Python 3 functools.wraps,
which seems to point __wrapped__ to the original function from any wrapping
layer. Of course, we could unwrap repeatedly in a while loop, but I'm
reluctant to do this in case strange objects from other packages drop it
into an infinite loop.

Would you consider making __wrapped__ (or another similar attribute) point
to the original function when several layers of wrapping are present? Or do
you know of a better way to approach the problem?

Thanks,
Thomas
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