On Mon, May 16, 2016 at 8:32 AM, Pavlos Parissis <pavlos.paris...@gmail.com> wrote: >> Searching the CPython sources for that exception shows one hit: >> selectors.py, where it converts a file object to an integer file >> descriptor. (You could have helped out by showing us the full >> traceback.) > > I did, https://gist.github.com/unixsurfer/67db620d87f667423f6f6e3a04e0bff5
Ah. I didn't click that link in your original post - didn't know it was the traceback. Better would have been to at least say so; best would have been to include it inline. >> Is it possible you were running out of file descriptors, >> or in some other way unable to create the pipe? > > I don't think as I see right now only 8 FDs: > > sudo ls -1 /proc/22706/fd|wc > 8 8 16 > If you can recreate the problem consistently, it would be worth messing around with slightly lower level APIs - using subprocess.Popen rather than check_output, for instance - and see what you can do without the pipes. Somewhere, something's failing, and it's not easy to see what. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
