Python: Pass or Sleep for long running processes?

Question

I am writing an queue processing application which uses threads for waiting on and responding to queue messages to be delivered to the app. For the main part of the applica

Answer 1

If you are looking for a short, zero-cpu way to loop forever until a KeyboardInterrupt, you can use:

from threading import Event

Event().wait()

Note: Due to a bug, this only works on Python 3.2+. In addition, it appears to not work on Windows. For this reason, while True: sleep(1) might be the better option.

For some background, Event objects are normally used for waiting for long running processes to complete:

def do_task():
    sleep(10)
    print('Task complete.')
    event.set()

event = Event()
Thread(do_task).start()
event.wait()

print('Continuing...')

Which prints:

Task complete.
Continuing...