use test_main() in __main__ section

diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 7b81fc11861ee29f216b390b6b4893da76364a22..95af197c2fc6254af3c3131e714623fc20f75c7d 100644 (file)
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -4207,4 +4207,4 @@ def test_main():
 
 
 if __name__ == '__main__':
-    unittest.main()
+    test_main()