Try one other possibility for symbols

A5rocks · Jun 12, 2024 · dedaf21 · dedaf21
1 parent e15bf6f
commit dedaf21
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/trio/_tests/test_exports.py b/src/trio/_tests/test_exports.py
@@ -401,7 +401,7 @@ def lookup_symbol(symbol: str) -> dict[str, str]:
         # using .remove() instead of .delete() to get an error in case they start not
         # being missing
 
-        if BaseException in class_.__mro__ and sys.version_info >= (3, 13):
+        if hasattr(class_, "__attrs_attrs__") and sys.version_info >= (3, 13):
             missing.remove("__firstlineno__")
             missing.remove("__static_attributes__")