Fix test_inheritance_pep563.

Author: serhiy-storchaka

Lib/test/pickletester.py

@@ -3239,7 +3239,7 @@ def test_builtin_exceptions(self):
                         self.assertIs(u, t)
 
     def test_builtin_functions(self):
-        new_names = {'aiter': (3, 10), 'anext': (3, 10)}
+        new_names = {'breakpoint': (3, 7), 'aiter': (3, 10), 'anext': (3, 10)}
         for t in builtins.__dict__.values():
             if isinstance(t, types.BuiltinFunctionType):
                 if t.__name__ in new_names and self.py_version < new_names[t.__name__]:
@@ -3259,6 +3259,7 @@ def test_proto(self):
             else:
                 self.assertEqual(count_opcode(pickle.PROTO, pickled), 0)
 
+    def test_bad_proto(self):
         oob = protocols[-1] + 1     # a future protocol
         build_none = pickle.NONE + pickle.STOP
         badpickle = pickle.PROTO + bytes([oob]) + build_none

Lib/test/support/__init__.py

@@ -1,7 +1,5 @@
 """Supporting definitions for the Python regression tests."""
 
-from __future__ import annotations  # for test_xpickle
-
 if __name__ != 'test.support':
     raise ImportError('support must be imported from the test package')
 
@@ -271,7 +269,7 @@ class USEROBJECTFLAGS(ctypes.Structure):
             reason = "unable to detect macOS launchd job manager"
         else:
             if managername != "Aqua":
-                reason = f"{managername=} -- can only run in a macOS GUI session"
+                reason = f"{managername!r} -- can only run in a macOS GUI session"
 
     # check on every platform whether tkinter can actually do anything
     if not reason:
@@ -803,7 +801,7 @@ def sortdict(dict):
     return "{%s}" % withcommas
 
 
-def run_code(code: str, extra_names: dict[str, object] | None = None) -> dict[str, object]:
+def run_code(code: str, extra_names: 'dict[str, object] | None' = None) -> 'dict[str, object]':
     """Run a piece of code after dedenting it, and return its global namespace."""
     ns = {}
     if extra_names:
@@ -3053,7 +3051,7 @@ def new_setUpClass(cls):
     return cls
 
 
-def make_clean_env() -> dict[str, str]:
+def make_clean_env() -> 'dict[str, str]':
     clean_env = os.environ.copy()
     for k in clean_env.copy():
         if k.startswith("PYTHON"):

Lib/test/test_xpickle.py

@@ -231,6 +231,9 @@ class CPicklePythonCompat(AbstractCompatTests):
     (3, 7): [
         # This version does not support buffers
         'test_in_band_buffers',
+
+        # No protocol validation in this version
+        'test_bad_proto',
     ],
 }