From c96fbe49267d8a919eb3d8fcec0f21e0058effb6 Mon Sep 17 00:00:00 2001
From: Vighnesh Birodkar <vighneshbirodkar@gmail.com>
Date: Tue, 27 Jan 2015 22:33:39 +0530
Subject: [PATCH] minor formatting

---
 skimage/graph/graph_merge.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/skimage/graph/graph_merge.py b/skimage/graph/graph_merge.py
index 5bafbd1f..308f7f37 100644
--- a/skimage/graph/graph_merge.py
+++ b/skimage/graph/graph_merge.py
@@ -50,6 +50,7 @@ def _rename_node(graph, node_id, copy_id):
 
     graph.remove_node(node_id)
 
+
 def _invalidate_edge(graph, n1, n2):
     """ Invalidates the edge (n1, n2) in the heap. """
     graph[n1][n2]['heap item'][3] = False