From 1265fead13c2d775d54e21791d1e10c6906ddb16 Mon Sep 17 00:00:00 2001
From: Marko Petric <marko.petric@cern.ch>
Date: Fri, 6 Apr 2018 14:54:44 +0200
Subject: [PATCH] Create empty dictionary if TGeoUnits do not exist

---
 DDCore/python/dd4hep_base.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/DDCore/python/dd4hep_base.py b/DDCore/python/dd4hep_base.py
index 5a82370b6..9b10e4b5c 100644
--- a/DDCore/python/dd4hep_base.py
+++ b/DDCore/python/dd4hep_base.py
@@ -254,5 +254,6 @@ try:
     return len(items)    
 except:
   print 'WARNING: No units from TGeoUnit can be imported. This is normal for ROOT < 6.12.0'
+  TGeoUnits = {}
   def import_units():
     return 0
-- 
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