Debugging a Python Program that Hangs

[alex23]

On Dec 3, 2:19 am, Kevin D. Smith <Kevin.Sm... at sas.com> wrote:
> I have a fairly large python program that, when a certain combination
> of options is used, hangs.  I have no idea where it is hanging, so
> simply putting in print statements to locate the spot would be quite
> difficult.  Unfortunately, ctrl-C'ing the program doesn't print a
> traceback either.  Looking through the python debugger documentation, I
> don't see how to run a python program and interactively stopping it
> while it is running.  Is there a way to stop within a running python
> program to see where it is getting hung up?

Hey Kevin, long time fan of your films! (I bet you get that a lot...)

The trace module might help you identify where it's getting caught up:

http://www.python.org/doc/2.5.2/lib/trace-cli.html