Update typing 03 (#48015)

homeassistant/util/unit_system.py

@@ -1,6 +1,7 @@
 """Unit system helper class and methods."""
+from __future__ import annotations
+
 from numbers import Number
-from typing import Dict, Optional
 
 from homeassistant.const import (
     CONF_UNIT_SYSTEM_IMPERIAL,
@@ -109,7 +110,7 @@ class UnitSystem:
 
         return temperature_util.convert(temperature, from_unit, self.temperature_unit)
 
-    def length(self, length: Optional[float], from_unit: str) -> float:
+    def length(self, length: float | None, from_unit: str) -> float:
         """Convert the given length to this unit system."""
         if not isinstance(length, Number):
             raise TypeError(f"{length!s} is not a numeric value.")
@@ -119,7 +120,7 @@ class UnitSystem:
             length, from_unit, self.length_unit
         )
 
-    def pressure(self, pressure: Optional[float], from_unit: str) -> float:
+    def pressure(self, pressure: float | None, from_unit: str) -> float:
         """Convert the given pressure to this unit system."""
         if not isinstance(pressure, Number):
             raise TypeError(f"{pressure!s} is not a numeric value.")
@@ -129,7 +130,7 @@ class UnitSystem:
             pressure, from_unit, self.pressure_unit
         )
 
-    def volume(self, volume: Optional[float], from_unit: str) -> float:
+    def volume(self, volume: float | None, from_unit: str) -> float:
         """Convert the given volume to this unit system."""
         if not isinstance(volume, Number):
             raise TypeError(f"{volume!s} is not a numeric value.")
@@ -137,7 +138,7 @@ class UnitSystem:
         # type ignore: https://github.com/python/mypy/issues/7207
         return volume_util.convert(volume, from_unit, self.volume_unit)  # type: ignore
 
-    def as_dict(self) -> Dict[str, str]:
+    def as_dict(self) -> dict[str, str]:
         """Convert the unit system to a dictionary."""
         return {
             LENGTH: self.length_unit,