handling uncaught exceptions with pdb?

[R. Bernstein]

Paul Rubin <http://phr.cx@NOSPAM.invalid> writes:

> I think I've asked about this before, but is there a way to set up
> Python to handle uncaught exceptions with pdb?  I know about setting
> sys.except_hook to something that calls pdb, but this is normally done
> at the outer level of a program, and by the time that hook gets
> called, the exception has already unwound the stack to the outermost
> level.  My situation is I run a multi-hour or multi-day computation
> that eventually crashes due to some unexpected input and I'd like to
> break to the debugger at the innermost level, right when the exception
> is encountered, so I can fix the error with pdb commands and resume
> processing.  
...

Why not use the traceback you get to show you where to change the code
around that point to add an exception handler there which calls the
debugger?