task-with-lockfile.py

from __future__ import print_function, unicode_literals, division, absolute_import

import sys
from zc.lockfile import LockFile, LockError

lockfile_name = '/tmp/foo-bar.txt'

try:
    lock = LockFile(lockfile_name)
except LockError:
    #log.warning('Task already running.')
    sys.exit()

try:
    pass
    # run task
except Exception as e:
    #log.exception(e)
    raise
finally:
    lock.close()