On Mon, Jan 30, 2017 at 7:33 PM, Ben Finney <ben+pyt...@benfinney.id.au> wrote:
> "ad^2" <adsquai...@gmail.com> writes: > > > So, IF: no lock file, create a lock file, execute, delete lock file > > when finished successfully. ElSE: the script is running, exit. Then, > > cron will try again an hour later. > > > > I do not necessarily require a "lock file" just looking for a > > recommendation on a best practice with low complexity to make this > > work. > > The third-party ‘fasteners’ library provides an API for locks > <URL:https://pypi.python.org/pypi/fasteners> that you will want to > consider. > > Specifically, the interpprocess lock decorators > <URL:https://fasteners.readthedocs.io/en/latest/ > examples.html#lock-decorator> > seem to be what you want. > ------------------- > Thanks for the help guys. This is what I ended up going with that works. Requires: lockfile, syslog and os modules pid = ('/var/lock/' + os.path.splitext(os.path.basename(__file__))[0]) try: lock = filelock.FileLock(pid) lock.acquire(timeout = 1) # my code function 1 # my code function 2 # and so on.... lock.release(force = True) os.unlink(pid) except (IOError, OSError) as e: syslog.syslog('%s' % e) print e _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
