add default empty elements attribute for code clarity

diff --git a/telemeta/dublincore.py b/telemeta/dublincore.py
index 2f8719584485e8b1ec2836d72ab94cbe09f7a6b8..d03a50f0ba629ea91b346317aaf8f795f8885c5d 100644 (file)
--- a/telemeta/dublincore.py
+++ b/telemeta/dublincore.py
@@ -8,6 +8,8 @@
 # Author: Olivier Guilyardi <olivier@samalyse.com>
 
 class Resource(object):
+    elements = []
+
     "Represent a Dublin Core resource"
     def __init__(self, *args):
         self.elements = args