1 files changed, 38 insertions, 0 deletions
diff --git a/astroid/util.py b/astroid/util.py
new file mode 100644
index 00000000..8dde9b97
--- /dev/null
+++ b/astroid/util.py
@@ -0,0 +1,38 @@
+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of astroid.
+#
+# astroid is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by the
+# Free Software Foundation, either version 2.1 of the License, or (at your
+# option) any later version.
+#
+# astroid is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+# for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with astroid. If not, see <http://www.gnu.org/licenses/>.
+#
+# The code in this file was originally part of logilab-common, licensed under
+# the same license.
+
+class _Yes(object):
+    """Special inference object, which is returned when inference fails."""
+    def __repr__(self):
+        return 'YES'
+
+    def __getattribute__(self, name):
+        if name == 'next':
+            raise AttributeError('next method should not be called')
+        if name.startswith('__') and name.endswith('__'):
+            return super(_Yes, self).__getattribute__(name)
+        return self
+
+    def __call__(self, *args, **kwargs):
+        return self
+
+
+YES = _Yes()