diff --git a/module3/exo1/analyse-syndrome-grippal.ipynb b/module3/exo1/analyse-syndrome-grippal.ipynb
index 59d72b5b58a3ae26346460dd39e62a39c55243d7..6c74529af615e6fb625522e5bc20bcf9c1d3df23 100644
--- a/module3/exo1/analyse-syndrome-grippal.ipynb
+++ b/module3/exo1/analyse-syndrome-grippal.ipynb
@@ -16,7 +16,9 @@
     "%matplotlib inline\n",
     "import matplotlib.pyplot as plt\n",
     "import pandas as pd\n",
-    "import isoweek"
+    "import isoweek\n",
+    "import os\n",
+    "import urllib.request"
    ]
   },
   {
@@ -37,6 +39,35 @@
     "data_url = \"http://www.sentiweb.fr/datasets/incidence-PAY-3.csv\""
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "local_filename = \"incidence-PAY-3.csv\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Télécharger si le fichier local n'existe pas"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    " if not os.path.exists(local_filename):\n",
+    "    print(\"Téléchargement du fichier\")\n",
+    "    urllib.request.urlretrieve(data_url, local_filename)\n",
+    "else:\n",
+    "    print(\"Fichier déjà présent localement.\")"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -65,7 +96,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "raw_data = pd.read_csv(data_url, skiprows=1)\n",
+    "raw_data = pd.read_csv(local_filename, skiprows=1)\n",
     "raw_data"
    ]
   },
@@ -364,7 +395,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.1"
+   "version": "3.6.4"
   }
  },
  "nbformat": 4,