Fix Windows buildbot failures after r66469.
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index f58aaf7..4897aaf 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -69,7 +69,8 @@
         os.write(fd, memoryview(b"spam\n"))
         os.close(fd)
         with open(support.TESTFN, "rb") as fobj:
-            self.assertEqual(fobj.read(), b"bacon\neggs\nspam\n")
+            self.assertEqual(fobj.read().splitlines(),
+                [b"bacon", b"eggs", b"spam"])
 
 
 class TemporaryFileTests(unittest.TestCase):
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index 0e5cb0f..0ef0925 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -314,7 +314,7 @@
         if not has_textmode:
             return            # ugh, can't use TestSkipped.
 
-        self.do_create(bin=0).write("blat\n")
+        self.do_create(bin=0).write(b"blat\n")
         # XXX should test that the file really is a text file
 
 test_classes.append(test__mkstemp_inner)