Hi Terry, On Fri, 13 Feb 2026 10:50:16 +0000, Terry Coles wrote: > /home/pi/.local/lib/site-packages/apscheduler/triggers/interval.py:6 > 6: PytzUsageWarning: The normalise method is no longer necessary, as > this time zone supports the fold attribute (PEP495). For more > details on migrating to a PEP 495-compliant implementation see > https://pytz-deprecation-shim.readthedocs.io/en/latest/migration.htm > l.
The apscheduler package is using the tzlocal package as one of its dependencies. This warning message arises when apscheduler's IntervalTrigger class calls the normalize method of a tzlocal timezone object, which you can see in the apscheduler v3.8.1 source code here: https://github.com/agronholm/apscheduler/blob/fc5c361dd9978c593b82125028119a358790048d/apscheduler/triggers/interval.py#L66 So, the warning in this case is directed at the developer of apscheduler. It doesn't relate to the code you have written. Modifying your code probably won't stop the warning appearing. It's not saying anything is going wrong. It's just rather forcefully saying there's now a new way to achieve the same outcome. I suppose the implication is that, if the new way of doing it doesn't get adopted, then eventually the old way of doing it might stop working, but that would be in some future release, not this one. It's been discussed on the apscheduler issue tracker: https://github.com/agronholm/apscheduler/discussions/570 According to the discussion, the warnings can be safely ignored, or tzlocal can be downgraded to a 2.x version to make them go away. Apparently apscheduler 4.x (which appears to be in alpha; not released yet) fixes this properly. Looking at the source code and the discussions, a quick fix to stop the warnings appearing has been implemented as of apscheduler v3.9.0, but the continued discussion indicates that this did not catch all possible triggers for the warning and they're not going to completely fix it in 3.x. So, it sounds like upgrading apscheduler is, in fact, a solution. It's just that the version you need to upgrade it to hasn't been released yet! Patrick Wigmore -- Next meeting: Online, Jitsi, Tuesday, 2026-03-03 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... https://dorset.lug.org.uk New thread, don't hijack: mailto:[email protected]
