20230327

数据库操作.ipynb

@@ -104,11 +104,53 @@
     "sql = \"select * from sports_person\"\n",
     "db.close()"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "execution": {
+     "iopub.execute_input": "2023-03-27T06:10:30.861854Z",
+     "iopub.status.busy": "2023-03-27T06:10:30.861008Z",
+     "iopub.status.idle": "2023-03-27T06:10:30.877436Z",
+     "shell.execute_reply": "2023-03-27T06:10:30.876689Z",
+     "shell.execute_reply.started": "2023-03-27T06:10:30.861813Z"
+    },
+    "tags": []
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "100\n"
+     ]
+    }
+   ],
+   "source": [
+    "import json\n",
+    "import pymongo\n",
+    "\n",
+    "myclient = pymongo.MongoClient('mongodb://localhost:27017/')\n",
+    "mydb = myclient[\"tice\"]\n",
+    "mycol = mydb[\"test\"]\n",
+    "renyuan = set()\n",
+    "for x in mycol.find():\n",
+    "  renyuan.add(x['name'])\n",
+    "print(len(renyuan))\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -122,7 +164,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.5"
+   "version": "3.10.6"
   }
  },
  "nbformat": 4,