0.15rc1 (from the tarball) still has this leftover debugging wart:
python-xlib-0.15rc1/Xlib/ext/randr.py def init(disp, info): print info.__class__
This means that any app prints
on startup. Aside from being noisy, it prevents my
xtoolwait clone from supporting
-pid, because that needs to output only the pid, and not unrelated text.
(Actually ran into this in Ubuntu Precise,
python-xlib 0.14+20091101-1 but it's been around for ages, I just hadn't gotten around to complaining...)