Fix a test again.

Author: serhiy-storchaka

Lib/test/test__colorize.py

@@ -79,6 +79,7 @@ def test_colorized_detection_checks_on_windows(self):
             self.assertEqual(_colorize.can_colorize(), True)
             vt_mock.return_value = False
             self.assertEqual(_colorize.can_colorize(), False)
+            import nt
             del nt._supports_virtual_terminal
             self.assertEqual(_colorize.can_colorize(), False)