Serhiy's request

Author: StanFromIreland

Lib/test/test_gzip.py

@@ -326,6 +326,8 @@ def test_mode(self):
         os_helper.unlink(self.filename)
         with gzip.GzipFile(self.filename, 'x') as f:
             self.assertEqual(f.myfileobj.mode, 'xb')
+        with gzip.GzipFile(self.filename, 'wb+') as f:
+            self.assertEqual(f.myfileobj.mode, 'wb+')
 
     def test_1647484(self):
         for mode in ('wb', 'rb'):

Lib/test/test_io.py

@@ -4337,7 +4337,7 @@ def test_attributes(self):
 
         f = self.open(os_helper.TESTFN, "w+", encoding="utf-8")
         self.assertEqual(f.mode,            "w+")
-        self.assertEqual(f.buffer.mode,     "wb+") # Does it really matter?
+        self.assertEqual(f.buffer.mode,     "wb+")
         self.assertEqual(f.buffer.raw.mode, "wb+")
 
         g = self.open(f.fileno(), "wb", closefd=False)