http://bugs.python.org/issue23764 highlighted that one of the useful features inspect.signature offers over the old APIs is correctly following wrapper chains.
There are some other features potentially worth backporting from 3.4 (like the inspect.signature based inspect.getargspec and inspect.getfullargspec), so a full rebase may even be worthwhile.
http://bugs.python.org/issue23764 highlighted that one of the useful features inspect.signature offers over the old APIs is correctly following wrapper chains.
Python 3.4 split that feature out into an independently usable component: https://docs.python.org/3/library/inspect.html#inspect.unwrap
There are some other features potentially worth backporting from 3.4 (like the inspect.signature based inspect.getargspec and inspect.getfullargspec), so a full rebase may even be worthwhile.