On Mon, 15 Feb 2021 17:13:12 +0000, Terry Coles wrote: > When the button is pressed, the Webserver generates a message > which it sends to the Music program. There is a cron job, triggerd > by apscheduler which parses the message and in this case calls the > next_playlist() function.
Ah, I think that changes things. Triggering a cron job is going to have an effect similar to starting a new thread. (Indeed, that might be precisely why you are using a cron job.) In which case, my hypothesis could well be completely wrong. I have a feeling you did explain this arrangement before, so I probably should have remembered. -- Next meeting: Online, Jitsi, Tuesday, 2021-03-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:firstname.lastname@example.org