Do not use the deprecated ValueError.message

docs/parsing.rst

@@ -19,7 +19,7 @@ and parse a stylesheet:
     >>> stylesheet.rules
     [<ImportRule 1:1 foo.css>, <RuleSet at 2:5 p.error>, <PageRule 3:5 (u'tables', None)>]
     >>> stylesheet.errors
-    [<ParseError: Parse error at 2:29, unknown at-rule in stylesheet context: @lorem-ipsum>]
+    [ParseError(u'Parse error at 2:29, unknown at-rule in stylesheet context: @lorem-ipsum',)]
 
 You’ll get a :class:`~tinycss.css21.Stylesheet` object which contains
 all the parsed content as well as a list of encountered errors.

tinycss/parsing.py

@@ -161,9 +161,5 @@ def __init__(self, subject, reason):
         self.line = subject.line
         self.column = subject.column
         self.reason = reason
-        self.msg = self.message = (
+        super(ParseError, self).__init__(
             'Parse error at {0.line}:{0.column}, {0.reason}'.format(self))
-        super(ParseError, self).__init__(self.message)
-
-    def __repr__(self):
-        return ('<{0.__class__.__name__}: {0.message}>'.format(self))

tinycss/tests/__init__.py

@@ -15,4 +15,4 @@ def assert_errors(errors, expected_errors):
     """Test not complete error messages but only substrings."""
     assert len(errors) == len(expected_errors)
     for error, expected in zip(errors, expected_errors):
-        assert expected in error.message
+        assert expected in str(error)