Fix self-check

python · Aug 4, 2024 · 92994db · 92994db
1 parent 91c7e2a
commit 92994db
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/mypy/typeanal.py b/mypy/typeanal.py
@@ -1615,7 +1615,11 @@ def analyze_literal_type(self, t: UnboundType) -> Type:
 
     def analyze_literal_param(self, idx: int, arg: Type, ctx: Context) -> list[Type] | None:
         # This UnboundType was originally defined as a string.
-        if isinstance(arg, (UnboundType, UnionType)) and arg.original_str_expr is not None:
+        if (
+            isinstance(arg, ProperType)
+            and isinstance(arg, (UnboundType, UnionType))
+            and arg.original_str_expr is not None
+        ):
             assert arg.original_str_fallback is not None
             return [
                 LiteralType(