diff --git a/数据处理.ipynb b/数据处理.ipynb
index 02caba7..0df48d4 100644
--- a/数据处理.ipynb
+++ b/数据处理.ipynb
@@ -1103,7 +1103,6 @@
   {
    "cell_type": "markdown",
    "metadata": {
-    "jp-MarkdownHeadingCollapsed": true,
     "tags": []
    },
    "source": [
@@ -1205,26 +1204,6 @@
     "collist = mydb. list_collection_names()\n",
     "print(collist)"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [],
-   "source": [
-    "list1 = []\n",
-    "if not list1:\n",
-    "    print('true')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {