Update to testing 3.10.0 final

That's the latest that GHA currently has. We've been testing 3.10.0 on AppVeyor.

.github/workflows/ci.yml

@@ -145,7 +145,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [2.7, pypy-2.7, pypy-3.6, 3.6, 3.7, 3.8, 3.9, '3.10.0-rc.1']
+        python-version: [2.7, pypy-2.7, pypy-3.6, 3.6, 3.7, 3.8, 3.9, '3.10.0']
         # ubuntu-latest is at least 20.04. But this breaks the SSL
         # tests because Ubuntu increased the default OpenSSL
         # strictness.
@@ -174,7 +174,7 @@ jobs:
           - os: ubuntu-18.04
             python-version: 3.9
           - os: ubuntu-18.04
-            python-version: '3.10.0-rc.1'
+            python-version: '3.10.0'
     steps:
       - name: checkout
         uses: actions/checkout@v2

appveyor.yml

@@ -42,7 +42,7 @@ environment:
 
     # 64-bit
     - PYTHON: "C:\\Python310-x64"
-      PYTHON_VERSION: "3.10.0rc1"
+      PYTHON_VERSION: "3.10.0"
       PYTHON_ARCH: "64"
       PYTHON_EXE: python
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019

src/greentest/3.10/test_threading.py

@@ -33,6 +33,9 @@ from test import support
 # on platforms known to behave badly.
 platforms_to_skip = ('netbsd5', 'hp-ux11')
 
+# Is Python built with Py_DEBUG macro defined?
+Py_DEBUG = hasattr(sys, 'gettotalrefcount')
+
 
 def restore_default_excepthook(testcase):
     testcase.addCleanup(setattr, threading, 'excepthook', threading.excepthook)
@@ -916,6 +919,16 @@ class ThreadTests(BaseTestCase):
             threading.Thread(target=noop).start()
             # Thread.join() is not called
 
+    @unittest.skipUnless(Py_DEBUG, 'need debug build (Py_DEBUG)')
+    def test_debug_deprecation(self):
+        # bpo-44584: The PYTHONTHREADDEBUG environment variable is deprecated
+        rc, out, err = assert_python_ok("-Wdefault", "-c", "pass",
+                                        PYTHONTHREADDEBUG="1")
+        msg = (b'DeprecationWarning: The threading debug '
+               b'(PYTHONTHREADDEBUG environment variable) '
+               b'is deprecated and will be removed in Python 3.12')
+        self.assertIn(msg, err)
+
 
 class ThreadJoinOnShutdown(BaseTestCase):
 

src/greentest/3.10/version

-3.10.0rc1
+3.10.0