Tests: Fix pep8.

src/test_pamhyr.py

@@ -79,15 +79,14 @@ class ToolsCMDParserTestCase(unittest.TestCase):
             self.assertEqual(res[i], s)
 
     def test_unix_escape_space(self):
-        cmd = "/foo/bar\ baz -a -b -c"
-        expect = ["/foo/bar\ baz", "-a", '-b', "-c"]
+        cmd = r"/foo/bar\ baz -a -b -c"
+        expect = [r"/foo/bar\ baz", "-a", '-b', "-c"]
 
         res = parse_command_line(cmd)
 
         for i, s in enumerate(expect):
             self.assertEqual(res[i], s)
 
-
     def test_windows_prog_files(self):
         cmd = "\"C:\\Program Files (x86)\foo\bar\" a -b -c"
         expect = ["C:\\Program Files (x86)\foo\bar", "a", '-b', "-c"]