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module3/exo1/influenza-like-illness-analysis.ipynb

@@ -59,6 +59,15 @@
     "The first line of the CSV file is a comment, which we ignore with `skip=1`."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Data loading with local file check\n",
+    "\n",
+    "In order to protect us in case the Réseau Sentinelles Web server disappears or is modified, we make a local copy of this dataset that we store together with our analysis. Before loading the data, we check whether the file already exists locally. If not, it is downloaded from the Réseau Sentinelles Web server and saved as a CSV file. This approach ensures reproducibility and prevents unnecessary repeated downloads."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 7,