add filename

tdhopper · tdhopper · commit 3c0f2bf01f34 · 2020-01-01T15:25:49.000-05:00
diff --git a/Examples.ipynb b/Examples.ipynb
@@ -313,6 +313,7 @@
     "\n",
     "def render_altair(chart):\n",
     "    b = BytesIO()\n",
+    "    b.name = \"x.png\"\n",
     "    chart.save(b, scale_factor=2.0)\n",
     "    return b"
    ]
