use more robust quoting
diff --git a/Lib/test/test_popen.py b/Lib/test/test_popen.py
index 454ba17..95f6d20 100644
--- a/Lib/test/test_popen.py
+++ b/Lib/test/test_popen.py
@@ -17,7 +17,7 @@
class PopenTest(unittest.TestCase):
def _do_test_commandline(self, cmdline, expected):
- cmd = '%r -c "import sys;print sys.argv" %s' % (python, cmdline)
+ cmd = '"%s" -c "import sys;print sys.argv" %s' % (python, cmdline)
data = os.popen(cmd).read()
got = eval(data)[1:] # strip off argv[0]
self.assertEqual(got, expected)