More proper closing of files
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index baa1943..81c9036 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -285,7 +285,8 @@
             if hasattr(os, "link"):
                 os.link(src, dst)
                 self.assertRaises(shutil.Error, shutil.copyfile, src, dst)
-                self.assertEqual(open(src,'r').read(), 'cheddar')
+                with open(src, 'r') as f:
+                    self.assertEqual(f.read(), 'cheddar')
                 os.remove(dst)
 
             # Using `src` here would mean we end up with a symlink pointing
@@ -293,7 +294,8 @@
             # TESTFN/cheese.
             os.symlink('cheese', dst)
             self.assertRaises(shutil.Error, shutil.copyfile, src, dst)
-            self.assertEqual(open(src,'r').read(), 'cheddar')
+            with open(src, 'r') as f:
+                self.assertEqual(f.read(), 'cheddar')
             os.remove(dst)
         finally:
             try:
@@ -690,9 +692,11 @@
                 pass
 
     def _check_move_file(self, src, dst, real_dst):
-        contents = open(src, "rb").read()
+        with open(src, "rb") as f:
+            contents = f.read()
         shutil.move(src, dst)
-        self.assertEqual(contents, open(real_dst, "rb").read())
+        with open(real_dst, "rb") as f:
+            self.assertEqual(contents, f.read())
         self.assertFalse(os.path.exists(src))
 
     def _check_move_dir(self, src, dst, real_dst):