Fixed float number validation in sensor component (#88074)

homeassistant/components/sensor/__init__.py

@@ -587,7 +587,7 @@ class SensorEntity(Entity):
         numerical_value: int | float | Decimal
         if not isinstance(value, (int, float, Decimal)):
             try:
-                if isinstance(value, str) and "." not in value:
+                if isinstance(value, str) and "." not in value and "e" not in value:
                     numerical_value = int(value)
                 else:
                     numerical_value = float(value)  # type:ignore[arg-type]

tests/components/sensor/test_init.py

@@ -1548,6 +1548,7 @@ async def test_non_numeric_validation_raise(
     [
         (13, "13"),
         (17.50, "17.5"),
+        ("1e-05", "1e-05"),
         (Decimal(18.50), "18.5"),
         ("19.70", "19.70"),
         (None, STATE_UNKNOWN),