chore: simplify is_missing()

gadenbuie · gadenbuie · commit 15f5562ea6be · 2025-01-22T15:23:16.000-05:00
diff --git a/shiny/types.py b/shiny/types.py
@@ -52,7 +52,7 @@ class MISSING_TYPE:
 
 
 def is_missing(x: Any) -> TypeIs[MISSING_TYPE]:
-    return x is MISSING or isinstance(x, MISSING_TYPE)
+    return isinstance(x, MISSING_TYPE)
 
 
 # Information about a single file, with a structure like:
