From 7817d6adaf8219af442e936efb926be67ca277f9 Mon Sep 17 00:00:00 2001
From: LtWorf <LtWorf@014f5005-505e-4b48-8d0a-63407b615a7c>
Date: Mon, 14 Jul 2008 13:14:50 +0000
Subject: [PATCH] product avoids duplicated items

git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@5 014f5005-505e-4b48-8d0a-63407b615a7c
---
 relation.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/relation.py b/relation.py
index d9175ab..e67b8e7 100644
--- a/relation.py
+++ b/relation.py
@@ -68,7 +68,9 @@ class relation (object):
 		
 		for i in self.content:
 			for j in other.content:
-				newt.content.append(i+j)
+				n=i+j
+				if n not in newt.content:
+					newt.content.append(i+j)
 		return newt