From 7ad02eb68c5af10b9fc07e4bcc99f660db285115 Mon Sep 17 00:00:00 2001
From: cgi1 <gies0r@gmail.com>
Date: Mon, 25 Sep 2017 13:43:25 +0200
Subject: [PATCH] Similar to #114 on attribute level

`add_attribute_tag(tag,attribute_identifier)` fails if attribute does not have any tag in before.
---
 pymisp/mispevent.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pymisp/mispevent.py b/pymisp/mispevent.py
index ecbf343..b5b0d74 100644
--- a/pymisp/mispevent.py
+++ b/pymisp/mispevent.py
@@ -76,6 +76,7 @@ class MISPAttribute(AbstractMISP):
         self._types = describe_types['types']
         self.__category_type_mapping = describe_types['category_type_mappings']
         self.__sane_default = describe_types['sane_defaults']
+        self.Tag = []
 
     def _reinitialize_attribute(self):
         # Default values