From c8d4adc06f96a821f305ca7512f988366c6e9463 Mon Sep 17 00:00:00 2001
From: Tamas Gal <tgal@km3net.de>
Date: Wed, 30 Sep 2020 15:08:46 +0200
Subject: [PATCH] Fixes is_single

---
 km3io/rootio.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/km3io/rootio.py b/km3io/rootio.py
index a5e4856..75e6436 100644
--- a/km3io/rootio.py
+++ b/km3io/rootio.py
@@ -174,7 +174,7 @@ class Branch:
     def __len__(self):
         if not self._index_chain:
             return len(self._branch)
-        elif isinstance(self._index_chain[-1], (int, np.int32, np.int64)):
+        elif isinstance(self._index_chain[0], (int, np.int32, np.int64)):
             if len(self._index_chain) == 1:
                 try:
                     return len(self[:])
-- 
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