new file mode 100644
--- /dev/null
+++ b/weighted_string.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+class Weighted_string(unicode):
+	
+	def __new__(cls, weight, string):
+		return super(Weighted_string, cls).__new__(cls, unicode(string))
+	
+	def __init__(self, weight, string):
+		self.weight = weight
+	
+	def __lt__(self, other):
+		return self.weight < other
+	
+	def __le__(self, other):
+		return self.weight <= other
+	
+	def __eq__(self, other):
+		return self.weight == other
+	
+	def __ne__(self, other):
+		return self.weight != other
+	
+	def __gt__(self, other):
+		return self.weight > other
+	
+	def __ge__(self, other):
+		return self.weight >= other
+	
+	def __repr__(self):
+		return '<'+unicode(self.weight)+', '+unicode.__repr__(self)+'>'