Op 14-02-16 om 14:40 schreef Peter Otten: > Antoon Pardon wrote: > >> I have written a small backup program, that uses ftplib to make >> remote backups. However recentely the program starts to regularly >> raise IndexErrors, as far as I can see the problem is in socket.py >> Can anyone shed some light? >> >> This is the traceback: > > [...] > >> File "/usr/lib/python2.7/socket.py", line 478, in readline >> if e.args[0] == EINTR: >> IndexError: tuple index out of range > > The offending line seems to be part of > > try: > data = self._sock.recv(self._rbufsize) > except error, e: > if e.args[0] == EINTR: > continue > raise > > >> Locals by frame, innermost last > > [...] > >> Frame readline in /usr/lib/python2.7/socket.py at line 478 >> buf = <cStringIO.StringO object at 0x7ff8c5d40298> >> buf_len = 0 >> e = timeout() >> self = <socket._fileobject object at 0x7ff8c7b75b50> >> size = 8193 > > It looks like the actual error is socket.timeout which is probably raised > from somewhere inside the stdlib without args.
I think I know what is going on. I have my own timeout mechanism at work here, that works with signals and alarm. When the SIGALRM fires I just raise the socket.timeout without arguments, which then causes the problem. I defined my own timeout exception class and now raise that and the problem disappeared. Thanks for the extra pair of eyes. -- Antoon Pardon. -- https://mail.python.org/mailman/listinfo/python-list
