Python: catch any exception and put it in a variable

Question

To figure out what it would take to avoid some recursion, I need to catch any exception (edit: Not just ones derived from Exception, but all exceptions, including KeyboardInterrupt and user exceptions), put it in a variable, and later re-raise it outside the catch block. Essentially, I'm trying to roll my own finally block. Is this possible?

The actual problem is to call a number of cleanup functions, and if any of them fail, all the others should also be called, then the exception for the one that failed should still propagate. Here's my current solution, it takes a list of Popen objects:

def cleanupProcs(procs):
    if not procs:
        return

    proc = procs.pop(0)
    try:
        proc.terminate()
        proc.wait()
    finally:
        cleanupProcs(procs)

Is there an iterative way to do this? A more elegant way? A more Pythonic way?

Answer 1

you can use:

procexceptions = []

except Exception, e:
    procexceptions.append(e)

and then later (after the loop for terminating processes) you can

raise procexceptions[0]

etc.