TIL: python signal, setproctitle, custom exceptions

til_python_2012_05_06.py

### signals
# http://docs.python.org/library/signal.html
# example: https://github.com/binarydud/pyres/blob/master/pyres/scheduler.py

import signal

signal.signal(signal.SIGTERM, self.schedule_shutdown)

def schedule_shutdown():
    self._shutdown = True

### setproctitle
# http://pypi.python.org/pypi/setproctitle/

import setproctitle
setproctitle.setproctitle('python: migrating photos from appengine')

# $ ps -e -o pid,command | grep [p]ython
# 4858 (python)
# 5367 python: migrating photos from appengine

### custom exceptions
# https://gist.github.com/2624788