Temporarily print some information in test_cmd_line,

to understand why the test fails on some platforms.

Lib/test/test_cmd_line.py

@@ -136,6 +136,8 @@ class CmdLineTest(unittest.TestCase):
             0)
 
         # Test handling of non-ascii data
+        if test.support.verbose:
+            print("FileSystemEncoding:", sys.getfilesystemencoding())
         command = "assert(ord('\xe9') == 0xe9)"
         self.assertEqual(
             self.exit_code('-c', command),