FWIW, Tornado's version of Future adds exc_info and set_exc_info methods so we can save tracebacks on python 2: http://www.tornadoweb.org/en/stable/concurrent.html#tornado.concurrent.Future.set_exc_info
This works pretty well for pure-tornado coroutines, although it doesn't help if you're interacting with the backported concurrent.futures or trollius. -Ben On Tue, Dec 23, 2014 at 2:49 AM, Victor Stinner <[email protected]> wrote: > Hi, > > Backporting the whole exception feature to Python 2 is not possible. > Develop with Python 3! > > Since the creation of Trollius, I'm trying the enhance debugging. For > example, the latest release of trollius (version 1.0.4) now saves the > traceback object in Future.set_exception() to be able to raise again the > exception with the expected traceback. > > I'm working on a larger project to save the chain of coroutines as a large > trabeback (stored as text) in debug mode, but for the "source traceback" > (where rhe object was created), not for the exception traceback. I have a > working patch on my PC. The following issue tracks the project: > https://code.google.com/p/tulip/issues/detail?id=212 > (The goal changed, the issue title is not correct) > > Victor >
