bpo-22831: Use "with" to avoid possible fd leaks in tests (part 2). (GH-10929)

diff --git a/Lib/test/test_bool.py b/Lib/test/test_bool.py
index c5a1f1f..909a59a 100644
--- a/Lib/test/test_bool.py
+++ b/Lib/test/test_bool.py
@@ -20,13 +20,11 @@
 
     def test_print(self):
         try:
-            fo = open(support.TESTFN, "w")
-            print(False, True, file=fo)
-            fo.close()
-            fo = open(support.TESTFN, "r")
-            self.assertEqual(fo.read(), 'False True\n')
+            with open(support.TESTFN, "w") as fo:
+                print(False, True, file=fo)
+            with open(support.TESTFN, "r") as fi:
+                self.assertEqual(fi.read(), 'False True\n')
         finally:
-            fo.close()
             os.remove(support.TESTFN)
 
     def test_repr(self):
@@ -245,9 +243,8 @@
 
     def test_fileclosed(self):
         try:
-            f = open(support.TESTFN, "w")
-            self.assertIs(f.closed, False)
-            f.close()
+            with open(support.TESTFN, "w") as f:
+                self.assertIs(f.closed, False)
             self.assertIs(f.closed, True)
         finally:
             os.remove(support.TESTFN)