Want to monitor the progress of a loop?

monitor.py

def monitor_progress(things, every=1000, message="Processing `{current}` of `{total}`"):
    print "Beginning processing"
    total = len(things)
    for idx, thing in enumerate(things):
        if not idx % every:
            print message.format(current=idx, total=total)
        yield thing
    print "Finished processing"