Modified daemon with lockfile and added channels option

[marc252]

Since daemon.pidlockfile didn't work with my python version I changed it with lockfile.pidlockfile
Also I added the channel option since my device has 3 channels

[mhagdorn]

Hi @marc252,
glad you found this useful. I am sorry to have slightly neglected it as I did similar fixes to you quite a while back. I have updated my repo. Are you using linux to run this program? I keep thinking I should turn this into a deb package or at least use setup tools to make it installable.

[marc252]

Hi Magnus, I'm using linux on a raspberry pi (raspbian). My goal is to create a datalogger for the currentcost envir and maybe a simple web to graph results.
I think we could improve this script much more, create init scripts, solve rotation issues, manage different channels, different locales etc.
About the debian package I think it's a good idea when all the additions are made, for a single script it doesn't make your life easier having it in a deb package, but if we had init scripts, cron files, config files etc then it would make more sense.
Still, the daemon pid lockfile is an issue depending on the python version you are using.