Module not found error - "recurring_ical_events"

[lothar-mar]

As mentioned in the title, i get this error when running "test_caldav.py" and "test_caldav_unit.py":

FAILED tests/test_caldav.py::TestLocalRadicale::testTodoDatesearch - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav.py::TestLocalRadicale::testRecurringDateSearch - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::testZero - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::testOne - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::testThree - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::testThreeTodo - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::testSplit - ModuleNotFoundError: No module named 'recurring_ical_events'
FAILED tests/test_caldav_unit.py::TestExpandRRule::test241 - ModuleNotFoundError: No module named 'recurring_ical_events'

AM I missing some dependencies perhaps?

[tobixen]

Yes, recurring-ical-events is listed as dependency in setup.py.

[daniele-athome]

I'll take the liberty of recycling this issue because the title of my bug would be identical :-)

Traceback (most recent call last):
   File "/home/homeassistant/hass/lib/python3.13/site-packages/homeassistant/helpers/update_coordinator.py>
     self.data = await self._async_update_data()
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   File "/home/homeassistant/hass/lib/python3.13/site-packages/homeassistant/components/caldav/coordinator>
     results = await self.hass.async_add_executor_job(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     ...<7 lines>...
     )
     ^
   File "/usr/lib/python3.13/concurrent/futures/thread.py", line 59, in run
     result = self.fn(*self.args, **self.kwargs)
   File "/home/homeassistant/hass/lib/python3.13/site-packages/caldav/objects.py", line 1105, in search
     o.expand_rrule(start, end)
     ~~~~~~~~~~~~~~^^^^^^^^^^^^
   File "/home/homeassistant/hass/lib/python3.13/site-packages/caldav/objects.py", line 1796, in expand_rr>
     import recurring_ical_events
 ModuleNotFoundError: No module named 'recurring_ical_events'

This is happening in Home Assistant, caldav integration, with both python-caldav 1.3.9 and 1.4.0. I'm guessing it has something to do with this item in this changelog:

Restructure module into package with a file structure.

That is, the directory recurring_ical_events doesn't exist anymore in my Python installation - I'm not really sure what is happening here though.

EDIT: rolling back recurring_ical_events to 3.4.1 fixes the problem.

[tobixen]

Ouch. Which version of the recurring_ical_events is used in your homeassistant installation?

[daniele-athome]

The latest, version 3.5.0.

[tobixen]

3.5.0 was released yesterday. I'll try and run the test code and see if I can reproduce it locally

[daniele-athome]

Indeed, yesterday I recreated my virtualenv and reinstalled Home Assistant, so pure bad luck :-)

EDIT: and also recurring_ical_events not properly using semver probably?

[tobixen]

That would surprise me, @niccokunzmann seems to be pretty clever at such things.

[tobixen]

I didn't check 3.5.0 specifically, but with the HEAD of the master branch at my laptop, there are no problems running the caldav test code.

[daniele-athome]

A simple reproducible case would be this (which I just tried):

python3 -m venv .venv
source .venv/bin/activate
pip3 install recurring-ical-events
python3
>> import recurring_ical_events
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    import recurring_ical_events
ModuleNotFoundError: No module named 'recurring_ical_events'

Apparently no Python source file of recurring_ical_events ever appeared in the venv. Am I doing something wrong?

ls -l .venv/lib/python3.13/site-packages
totale 104
drwxrwxr-x 3 daniele daniele  4096 12 feb 11.46 click
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 click-8.1.8.dist-info
drwxrwxr-x 6 daniele daniele  4096 12 feb 11.46 dateutil
drwxrwxr-x 5 daniele daniele  4096 12 feb 11.46 icalendar
drwxrwxr-x 3 daniele daniele  4096 12 feb 11.46 icalendar-6.1.1.dist-info
drwxrwxr-x 5 daniele daniele  4096 12 feb 11.45 pip
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.45 pip-25.0.dist-info
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 __pycache__
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 python_dateutil-2.9.0.post0.dist-info
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 recurring_ical_events-3.5.0.dist-info
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 six-1.17.0.dist-info
-rw-rw-r-- 1 daniele daniele 34703 12 feb 11.46 six.py
drwxrwxr-x 4 daniele daniele  4096 12 feb 11.46 tzdata
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 tzdata-2025.1.dist-info
drwxrwxr-x 2 daniele daniele  4096 12 feb 11.46 x_wr_timezone-2.0.1.dist-info
-rw-rw-r-- 1 daniele daniele  8569 12 feb 11.46 x_wr_timezone.py

There is only the dist-info directory.

EDIT: maybe I need to open a bug to recurring_ical_events, it seems like a packaging issue.

[tobixen]

In the "classic" system-wide configuration I wasn't able to reproduce, and using venv all caldav tests passed - but the recurring_ical_events is lazily loaded when needed rather than immediately when loading the caldav library, the tests are probably running only towards xandikos on a plain venv, xandikos does not support recurrences, hence all tests involving recurrences are skipped. I can indeed reproduce the issue, being unable to load recurring_ical_events from a plain venv.

And yes, since the bug is reproducible without involving the caldav library, it would be more approriate to file it under the recurring_ical_event project :-) https://github.com/niccokunzmann/python-recurring-ical-events

[daniele-athome]

Thanks for the support! Opened niccokunzmann/python-recurring-ical-events#214

If indeed it is a packaging problem and a new version will be released to fix this, I would suggest you put an exclusion of version 3.5.0 in your dependencies.

[niccokunzmann]

Sorry for the inconvenience! I will delete the release once there is a fix. Then, you do not need to add an exception.