Unexpected exception importing component custom_components.powercalc - python 3.10 dependency?

[gweiss76]

Hi Bram

When trying to test your integration i get the following exception. I'm running this on debian bullseye (python 3.9)

From looking at the code and github i identified #1147 I'm unsure but it seems to me that you are introducing a hard dependency on python 3.10.

From: https://docs.python.org/3/library/typing.html Changed in version 3.10: Optional can now be written as X | None.

Is this intented?

Thanks

2022-10-18 21:53:30.886 ERROR (MainThread) [homeassistant.loader] Unexpected exception importing component custom_components.powercalc
Traceback (most recent call last):
  File "/srv/homeassistant/pyvenv/lib/python3.9/site-packages/homeassistant/loader.py", line 703, in get_component
    cache[self.domain] = importlib.import_module(self.pkg_path)
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 790, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/__init__.py", line 90, in <module>
    from .sensors.group import update_associated_group_entry
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/sensors/group.py", line 58, in <module>
    from .energy import EnergySensor, RealEnergySensor
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/sensors/energy.py", line 33, in <module>
    from .power import PowerSensor, RealPowerSensor
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/sensors/power.py", line 69, in <module>
    from ..strategy.factory import PowerCalculatorStrategyFactory
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/strategy/factory.py", line 18, in <module>
    from .fixed import FixedStrategy
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/strategy/fixed.py", line 17, in <module>
    from .strategy_interface import PowerCalculationStrategyInterface
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/strategy/strategy_interface.py", line 7, in <module>
    class PowerCalculationStrategyInterface:
  File "/srv/homeassistant/.homeassistant/custom_components/powercalc/strategy/strategy_interface.py", line 8, in PowerCalculationStrategyInterface
    async def calculate(self, entity_state: State) -> Decimal | None:
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'

[bramstroker]

@gweiss76 Thanks for reporting. Should potentially be fixed with #1172. Just released new beta.7 with the fix. Are you able to test?

[gweiss76]

@bramstroker beta.7 works for me. Thanks