From 3213282b75031b8142e1e05a03df2ccb7e3d94ac Mon Sep 17 00:00:00 2001
From: Freddie Akeroyd <freddie.akeroyd@stfc.ac.uk>
Date: Mon, 16 Dec 2024 12:58:16 +0000
Subject: [PATCH] Fix incorrect type narrowing

---
 utils/channel_access.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/channel_access.py b/utils/channel_access.py
index db38070a..4b2c17e6 100644
--- a/utils/channel_access.py
+++ b/utils/channel_access.py
@@ -608,7 +608,7 @@ def assert_that_pv_is_within_range(
         """
 
         def _condition(val: PVValue) -> bool:
-            assert isinstance(val, float)
+            assert isinstance(val, (int, float, str))
             return min_value <= float(val) <= max_value
 
         message = "Expected PV value to between {} and {}".format(min_value, max_value)