From b51aafa77ee08ac6d542fa82b7271ca466759acb Mon Sep 17 00:00:00 2001
From: Devin Burke <devin.burke@desy.de>
Date: Wed, 18 Sep 2024 11:09:33 +0200
Subject: [PATCH] Refactored PerSignalConfig to better support type checkers

---
 src/ophyd_async/core/_readable.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/ophyd_async/core/_readable.py b/src/ophyd_async/core/_readable.py
index a262a7f0f1..261ce6cc9e 100644
--- a/src/ophyd_async/core/_readable.py
+++ b/src/ophyd_async/core/_readable.py
@@ -1,7 +1,7 @@
 import asyncio
 import warnings
 from contextlib import contextmanager
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import (
     Any,
     Callable,
@@ -32,12 +32,12 @@
 
 
 @dataclass
-class PerSignalConfig(Dict[SignalW[T], T]):
-    _signal_configuration: Dict[SignalW[Any], Any] = field(default_factory=dict)
+class PerSignalConfig(Dict[SignalW, Any]):
+    def __setitem__(self, signal: SignalW[T], value: T):
+        super().__setitem__(signal, value)
 
-    @property
-    def signal_configuration(self) -> Dict[SignalW[Any], Any]:
-        return self._signal_configuration
+    def __getitem__(self, signal: SignalW[T]) -> T:
+        return super().__getitem__[signal]
 
 
 class StandardReadable(