gh-117110: Fix subclasses of typing.Any with custom constructors

Lib/test/test_typing.py

@@ -152,6 +152,12 @@ def test_any_works_with_alias(self):
         typing.Pattern[Any]
         typing.IO[Any]
 
+    def test_subclass_can_instantiate_with_arguments(self):
+        class Sub(Any):
+            def __init__(self, *args, **kwargs): pass
+        # The instantiation must not fail.
+        Sub(0, s="")
+
 
 class BottomTypeTestsMixin:
     bottom_type: ClassVar[Any]

Lib/typing.py

@@ -539,7 +539,7 @@ class Any(metaclass=_AnyMeta):
     def __new__(cls, *args, **kwargs):
         if cls is Any:
             raise TypeError("Any cannot be instantiated")
-        return super().__new__(cls, *args, **kwargs)
+        return super().__new__(cls)
 
 
 @_SpecialForm

Misc/NEWS.d/next/Library/2024-03-21-07-27-36.gh-issue-117110.9K1InX.rst

@@ -0,0 +1 @@
+Fix a bug that prevents subclasses of :class:`typing.Any` to be instantiated with arguments. Patch by Chris Fu.