From 370ceaf4143a9cafbe45b4ea37f9fd16ee6a4601 Mon Sep 17 00:00:00 2001
From: Donne Martin <donne.martin@gmail.com>
Date: Wed, 5 Aug 2015 05:45:02 -0400
Subject: [PATCH] Simplified check to determine if there are items in the
 queue.

---
 graphs_trees/graph_bfs/bfs_solution.ipynb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graphs_trees/graph_bfs/bfs_solution.ipynb b/graphs_trees/graph_bfs/bfs_solution.ipynb
index 14417ff..94fb659 100644
--- a/graphs_trees/graph_bfs/bfs_solution.ipynb
+++ b/graphs_trees/graph_bfs/bfs_solution.ipynb
@@ -117,7 +117,7 @@
     "    queue = deque()\n",
     "    queue.append(root)\n",
     "    root.visited = True\n",
-    "    while len(queue) > 0:\n",
+    "    while queue:\n",
     "        node = queue.popleft()\n",
     "        visit_func(node.id)\n",
     "        for adjacent_node in node.adjacent:\n",