Scheduler stops due to Timezone Mismatch

[mbelletti]

After recent updates, tasks occasionally fail to execute and the scheduler stops picking up new tasks. The issue appears to be related in the use of utcnow in the scheduler now function.

Previous behaviour:

datetime.datetime.utcnow()

datetime.datetime(2024, 12, 6, 10, 9, 42, 309311)

Current behavior from utcnow return timezone information:

datetime.datetime.now(datetime.timezone.utc)

datetime.datetime(2024, 12, 6, 9, 49, 34, 431457, tzinfo=datetime.timezone.utc)

that is the errror:

Exception in thread Thread-2 (loop):
Traceback (most recent call last):
  File "/Users/max/.pyenv/versions/3.10.2/lib/python3.10/threading.py", line 1009, in _bootstrap_inner
    self.run()
  File "/Users/max/.pyenv/versions/3.10.2/lib/python3.10/threading.py", line 946, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/max/.pyenv/versions/py4web_3.10.2/lib/python3.10/site-packages/pydal/tools/scheduler.py", line 184, in loop
    if not self.step():
  File "/Users/max/.pyenv/versions/py4web_3.10.2/lib/python3.10/site-packages/pydal/tools/scheduler.py", line 210, in step
    if run.timeout and run.started_on + delta(run.timeout) < now():
TypeError: can't compare offset-naive and offset-aware datetimes