diff --git a/docs/development/profiling/tardis_profiling_threads.ipynb b/docs/development/profiling/tardis_profiling_threads.ipynb
index 38c6f4754cb..b0dd15af057 100644
--- a/docs/development/profiling/tardis_profiling_threads.ipynb
+++ b/docs/development/profiling/tardis_profiling_threads.ipynb
@@ -48,26 +48,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "def open_file(file_name):\n",
-    "    \"\"\"\n",
-    "    Tries to open the file specified by year. If it can, returns the fp.\n",
-    "    If it cannot, it raises an error.\n",
-    "    \n",
-    "    Parameters\n",
-    "    ----------\n",
-    "    file_name : string\n",
-    "    \n",
-    "    Returns\n",
-    "    -------\n",
-    "    fp : file\n",
-    "    \"\"\"\n",
-    "\n",
-    "    try:\n",
-    "        fp = open(file_name, \"r\")\n",
-    "        return fp\n",
-    "    except:\n",
-    "        raise NameError(\"Filename {} is invalid\".format(file_name))\n",
-    "    \n",
     "def build_dictionary(fp):\n",
     "    \"\"\"\n",
     "    Uses the fp generated from open_file to return a dictionary. Then closes\n",
@@ -240,25 +220,25 @@
    },
    "outputs": [],
    "source": [
-    "tardis_file = 'tardis_example.yml'\n",
-    "storage_file = 'threads_dict_128_threads_1_node.csv'\n",
-    "cpu_storage_file = 'cpu_threads_dict_128_threads_1_node.csv'\n",
+    "TARDIS_FILE = 'tardis_example.yml'\n",
+    "STORAGE_FILE = 'threads_dict_128_threads_1_node.csv'\n",
+    "CPU_STORAGE_FILE = 'cpu_threads_dict_128_threads_1_node.csv'\n",
     "\n",
     "#Compile the numba functions\n",
-    "run_tardis(tardis_file)\n",
+    "run_tardis(TARDIS_FILE)\n",
+    "\n",
+    "#Opens file and builds the dictionary\n",
+    "with open(STORAGE_FILE, \"r\") as threads_fp:\n",
+    "    threads_dict = build_dictionary(threads_fp)\n",
+    "\n",
+    "with open(CPU_STORAGE_FILE, \"r\") as cpu_fp:\n",
+    "    cpu_threads_dict = build_dictionary(cpu_fp)\n",
     "\n",
-    "#Opens file\n",
-    "threads_fp = open_file(storage_file)\n",
-    "cpu_fp = open_file(cpu_storage_file)\n",
     "#Creates list of main data\n",
     "threads_numbers = [i for i in range(1, 129, 1)]\n",
     "cpu_threads_numbers = [i for i in range(1, 129, 1)]\n",
     "\n",
-    "#Creates dictionary of thread timings, closes the file\n",
-    "threads_dict = build_dictionary(threads_fp)\n",
-    "cpu_threads_dict = build_dictionary(cpu_fp)\n",
-    "\n",
-    "generate_data(128, 30, threads_dict, cpu_threads_dict, tardis_file, storage_file, cpu_storage_file)"
+    "generate_data(128, 30, threads_dict, cpu_threads_dict, TARDIS_FILE, STORAGE_FILE, CPU_STORAGE_FILE)"
    ]
   },
   {