Use abstract base class

utils/measure/powermeter/dummy.py

@@ -5,6 +5,6 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class DummyPowerMeter:
+class DummyPowerMeter(PowerMeter):
     def get_power(self) -> PowerMeasurementResult:
         return PowerMeasurementResult(20.5, time.time())

utils/measure/powermeter/hass.py

@@ -11,7 +11,7 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class HassPowerMeter:
+class HassPowerMeter(PowerMeter):
     def __init__(self, api_url: str, token: str, call_update_entity: bool):
         self._call_update_entity = call_update_entity
         self._entity_id: str | None = None

utils/measure/powermeter/kasa.py

@@ -8,7 +8,7 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class KasaPowerMeter:
+class KasaPowerMeter(PowerMeter):
     def __init__(self, device_ip: str):
         self._smartplug = SmartPlug(device_ip)
 

utils/measure/powermeter/manual.py

@@ -5,7 +5,7 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class ManualPowerMeter:
+class ManualPowerMeter(PowerMeter):
     def get_power(self) -> PowerMeasurementResult:
         power = input('Input power measurement:')
         return PowerMeasurementResult(float(power), time.time())

utils/measure/powermeter/ocr.py

@@ -5,7 +5,7 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class OcrPowerMeter:
+class OcrPowerMeter(PowerMeter):
     def __init__(self) -> None:
         filepath = os.path.join(
             os.path.dirname(os.path.abspath(__file__)),

utils/measure/powermeter/powermeter.py

@@ -1,20 +1,22 @@
 from __future__ import annotations
 
-from typing import Any, NamedTuple, Protocol
+from typing import Any, NamedTuple
+from abc import ABC, abstractmethod
 
 
-class PowerMeter(Protocol):
+class PowerMeter(ABC):
+    @abstractmethod
     def get_power(self) -> PowerMeasurementResult:
         """Get a power measurement from the meter"""
-        ...
+        pass
 
     def get_questions(self) -> list[dict]:
         """Get questions to ask for the chosen powermeter"""
-        ...
+        return []
 
-    def process_answers(self, answers: dict[str, Any]):
+    def process_answers(self, answers: dict[str, Any]) -> None:
         """Process the answers to the asked questions"""
-        ...
+        pass
 
 
 class PowerMeasurementResult(NamedTuple):

utils/measure/powermeter/shelly.py

@@ -41,7 +41,7 @@ def parse_json(self, json: dict) -> tuple[float, float]:
         )
 
 
-class ShellyPowerMeter:
+class ShellyPowerMeter(PowerMeter):
     def __init__(self, shelly_ip: str, timeout: int = 5):
         self.timeout = timeout
         self.ip_address = shelly_ip

utils/measure/powermeter/tasmota.py

@@ -8,7 +8,7 @@
 from .powermeter import PowerMeasurementResult, PowerMeter
 
 
-class TasmotaPowerMeter:
+class TasmotaPowerMeter(PowerMeter):
     def __init__(self, device_ip: str):
         self._device_ip = device_ip
 

utils/measure/powermeter/tuya.py

@@ -10,7 +10,7 @@
 STATUS_OK = "OK"
 
 
-class TuyaPowerMeter:
+class TuyaPowerMeter(PowerMeter):
     def __init__(
         self,
         device_id: str,