use with statement

Lib/test/test_httpservers.py

@@ -324,10 +324,9 @@ class SimpleHTTPServerTestCase(BaseTestCase):
         self.check_status_and_reason(response, 404)
         response = self.request('/' + 'ThisDoesNotExist' + '/')
         self.check_status_and_reason(response, 404)
-        f = open(os.path.join(self.tempdir_name, 'index.html'), 'w')
+        with open(os.path.join(self.tempdir_name, 'index.html'), 'w') as fp:
             response = self.request('/' + self.tempdir_name + '/')
             self.check_status_and_reason(response, 200)
-
             # chmod() doesn't work as expected on Windows, and filesystem
             # permissions are ignored by root on Unix.
             if os.name == 'posix' and os.geteuid() != 0:
@@ -335,7 +334,6 @@ class SimpleHTTPServerTestCase(BaseTestCase):
                 response = self.request(self.tempdir_name + '/')
                 self.check_status_and_reason(response, 404)
                 os.chmod(self.tempdir, 0755)
-        f.close()    
 
     def test_head(self):
         response = self.request(