Define missing using an actual class

pallets · Oct 2, 2024 · d3dd9f2 · d3dd9f2
1 parent 0a87e81
commit d3dd9f2
Showing 1 changed file with 11 additions and 6 deletions.
diff --git a/src/jinja2/utils.py b/src/jinja2/utils.py
@@ -18,12 +18,17 @@
 
 F = t.TypeVar("F", bound=t.Callable[..., t.Any])
 
-# special singleton representing missing values for the runtime
-missing: t.Any = type(
-    "MissingType",
-    (),
-    {"__repr__": lambda x: "missing", "__reduce__": lambda x: "missing"},
-)()
+
+class _MissingType:
+    def __repr__(self) -> str:
+        return "missing"
+
+    def __reduce__(self) -> str:
+        return "missing"
+
+
+missing: t.Any = _MissingType()
+"""Special singleton representing missing values for the runtime."""
 
 internal_code: t.MutableSet[CodeType] = set()