diff -r 478b4e9551fa Lib/ast.py
--- a/Lib/ast.py	Sun Dec 04 23:56:30 2011 +0100
+++ b/Lib/ast.py	Mon Dec 05 20:05:10 2011 -0500
@@ -61,6 +61,8 @@
 elif isinstance(node, Dict):
 return dict((_convert(k), _convert(v)) for k, v
 in zip(node.keys, node.values))
+ elif isinstance(node, Set):
+ return {_convert(v) for v in node.elts}
 elif isinstance(node, Name):
 if node.id in _safe_names:
 return _safe_names[node.id]
diff -r 478b4e9551fa Lib/test/test_ast.py
--- a/Lib/test/test_ast.py	Sun Dec 04 23:56:30 2011 +0100
+++ b/Lib/test/test_ast.py	Mon Dec 05 20:05:10 2011 -0500
@@ -472,7 +472,9 @@
 self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])
 self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
 self.assertEqual(ast.literal_eval('(True, False, None)'), (True, False, None))
+ self.assertEqual(ast.literal_eval('{1}'), {1})
 self.assertRaises(ValueError, ast.literal_eval, 'foo()')
+ self.assertRaises(ValueError, ast.literal_eval, '{1, a}')
 
 def test_literal_eval_issue4907(self):
 self.assertEqual(ast.literal_eval('2j'), 2j)
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file23859/x.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file23859/x.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>