pythoningLearning
diff --git a/‎opc/package.py‎
Lines changed: 4 additions & 0 deletions b/‎opc/package.py‎
Lines changed: 4 additions & 0 deletions
diff --git a/‎tests/test_package.py‎
Lines changed: 10 additions & 0 deletions b/‎tests/test_package.py‎
Lines changed: 10 additions & 0 deletions
@@ -115,6 +115,10 @@ def __init__(self, baseURI):
         super(RelationshipCollection, self).__init__()
         self._rels = []
 
+    def __getitem__(self, idx):
+        """Implements access by subscript, e.g. rels[9]"""
+        return self._rels.__getitem__(idx)
+
     def __len__(self):
         """Implements len() built-in on this object"""
         return self._rels.__len__()
 
@@ -115,6 +115,16 @@ def it_has_a_len(self):
         rels = RelationshipCollection(None)
         assert len(rels) == 0
 
+    def it_supports_indexed_access(self):
+        rels = RelationshipCollection(None)
+        try:
+            rels[0]
+        except TypeError:
+            msg = 'RelationshipCollection does not support indexed access'
+            pytest.fail(msg)
+        except IndexError:
+            pass
+
 
 class DescribeUnmarshaller(object):