From dcc43886c866290f53f179de74eb18d91d984320 Mon Sep 17 00:00:00 2001
From: Johannes Schumann <johannes.schumann@fau.de>
Date: Wed, 15 Mar 2023 00:16:28 +0100
Subject: [PATCH] make reader backward compatible

---
 km3buu/output.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/km3buu/output.py b/km3buu/output.py
index afac4fe..9e34538 100644
--- a/km3buu/output.py
+++ b/km3buu/output.py
@@ -536,11 +536,19 @@ class GiBUUOutput:
 
     @property
     def A(self):
-        return self.jobcard["target"]["a"]
+        grp = self.jobcard["target"]
+        if "a" in grp.keys():
+            return grp["a"]
+        elif "target_a" in grp.keys():
+            return grp["target_a"]
 
     @property
     def Z(self):
-        return self.jobcard["target"]["z"]
+        grp = self.jobcard["target"]
+        if "z" in grp.keys():
+            return grp["z"]
+        elif "target_z" in grp.keys():
+            return grp["target_z"]
 
     @property
     def data_path(self):
-- 
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