gh-136021: Make type_params a required parameter for typing._eval_type (#136332)

Lib/test/test_typing.py

@@ -6309,31 +6309,6 @@ class NoTypeCheckTests(BaseTestCase):
 
 
 class InternalsTests(BaseTestCase):
-    def test_deprecation_for_no_type_params_passed_to__evaluate(self):
-        with self.assertWarnsRegex(
-            DeprecationWarning,
-            (
-                "Failing to pass a value to the 'type_params' parameter "
-                "of 'typing._eval_type' is deprecated"
-            )
-        ) as cm:
-            self.assertEqual(typing._eval_type(list["int"], globals(), {}), list[int])
-
-        self.assertEqual(cm.filename, __file__)
-
-        f = ForwardRef("int")
-
-        with self.assertWarnsRegex(
-            DeprecationWarning,
-            (
-                "Failing to pass a value to the 'type_params' parameter "
-                "of 'typing.ForwardRef._evaluate' is deprecated"
-            )
-        ) as cm:
-            self.assertIs(f._evaluate(globals(), {}, recursive_guard=frozenset()), int)
-
-        self.assertEqual(cm.filename, __file__)
-
     def test_collect_parameters(self):
         typing = import_helper.import_fresh_module("typing")
         with self.assertWarnsRegex(

Lib/typing.py

@@ -437,10 +437,7 @@ class _Sentinel:
         return '<sentinel>'
 
 
-_sentinel = _Sentinel()
-
-
-def _eval_type(t, globalns, localns, type_params=_sentinel, *, recursive_guard=frozenset(),
+def _eval_type(t, globalns, localns, type_params, *, recursive_guard=frozenset(),
                format=None, owner=None):
     """Evaluate all forward references in the given type t.
 
@@ -448,9 +445,6 @@ def _eval_type(t, globalns, localns, type_params=_sentinel, *, recursive_guard=f
     recursive_guard is used to prevent infinite recursion with a recursive
     ForwardRef.
     """
-    if type_params is _sentinel:
-        _deprecation_warning_for_no_type_params_passed("typing._eval_type")
-        type_params = ()
     if isinstance(t, _lazy_annotationlib.ForwardRef):
         # If the forward_ref has __forward_module__ set, evaluate() infers the globals
         # from the module, and it will probably pick better than the globals we have here.

Misc/NEWS.d/next/Library/2025-07-06-10-18-48.gh-issue-136021.f-FJYT.rst

@@ -0,0 +1,3 @@
+Make ``type_params`` parameter required in :func:`!typing._eval_type` after
+a deprecation period for not providing this parameter. Also remove the
+:exc:`DeprecationWarning` for the old behavior.