Generics and other type hint improvements (#45250)

homeassistant/util/process.py

@@ -1,9 +1,17 @@
 """Util to handle processes."""
 
+from __future__ import annotations
+
 import subprocess
+from typing import Any
+
+# mypy: disallow-any-generics
 
 
-def kill_subprocess(process: subprocess.Popen) -> None:
+def kill_subprocess(
+    # pylint: disable=unsubscriptable-object # https://github.com/PyCQA/pylint/issues/4034
+    process: subprocess.Popen[Any],
+) -> None:
     """Force kill a subprocess and wait for it to exit."""
     process.kill()
     process.communicate()