From 7f58aa933b2fbf5d5de1d402941149dabeb6010b Mon Sep 17 00:00:00 2001
From: johnnyliu27 <johnny16.21@gmail.com>
Date: Mon, 2 Oct 2017 11:51:54 -0400
Subject: [PATCH] Changing parentheses into square brackets for creating
 materials_file

---
 examples/jupyter/post-processing.ipynb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/jupyter/post-processing.ipynb b/examples/jupyter/post-processing.ipynb
index 72fb73758a..b0e9552983 100644
--- a/examples/jupyter/post-processing.ipynb
+++ b/examples/jupyter/post-processing.ipynb
@@ -105,7 +105,7 @@
    "outputs": [],
    "source": [
     "# Instantiate a Materials collection\n",
-    "materials_file = openmc.Materials((fuel, water, zircaloy))\n",
+    "materials_file = openmc.Materials([fuel, water, zircaloy])\n",
     "\n",
     "# Export to \"materials.xml\"\n",
     "materials_file.export_to_xml()"