Update plotyl instructions

book/features/plotly.ipynb

@@ -437,6 +437,58 @@
     "\n",
     "fig.show()"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "If you want to create the plot during the build of the book, don't use `fig.show()` but use the code below:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from IPython import get_ipython\n",
+    "from IPython.display import HTML\n",
+    "\n",
+    "def show_plotly(fig):\n",
+    "    ip = get_ipython()\n",
+    "    if ip is None:\n",
+    "        return fig\n",
+    "\n",
+    "    # Sphinx / Jupyter Book execution\n",
+    "    if \"sphinx\" in ip.config:\n",
+    "        return HTML(fig.to_html(include_plotlyjs=\"cdn\"))\n",
+    "\n",
+    "    # Local execution in Jupyter Notebook / JupyterLab / VS Code\n",
+    "    fig.show()\n",
+    "\n",
+    "....\n",
+    "\n",
+    "show_plotly(fig)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Make sure you have in your `_config.yml`:\n",
+    "\n",
+    "```yaml\n",
+    "execute:\n",
+    "  execute_notebooks: \"auto\"\n",
+    "```"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Eventually in combination with [](../_git/github.com_TeachBooks_Sphinx-NB-Execution-Patterns/Manual/README.html)"
+   ]
   }
  ],
  "metadata": {