如何在to_json（Pandas）中包含Dataframe的名称

Question

使用此问题的数据集（Pandas dataframe to json without index），如何添加数据框的名称？

to_json()正在回复我：

[
 {"id":0,"location":"[50, 50]"},
 {"id":1,"location":"[60, 60]"},
 {"id":2,"location":"[70, 70]"},
 {"id":3,"location":"[80, 80]"}
]

但是我想要这样的JSON：

{
"stops":
[
 {"id":0,"location":"[50, 50]"},
 {"id":1,"location":"[60, 60]"},
 {"id":2,"location":"[70, 70]"},
 {"id":3,"location":"[80, 80]"}
]
}

Answer 1

IIUC：

In [77]: d = {'stops':df.reset_index().to_dict(orient='records')}

In [78]: js = json.dumps(d, indent=2)

In [79]: print(js)
{
  "stops": [
    {
      "id": 0,
      "location": "[50, 50]"
    },
    {
      "id": 1,
      "location": "[60, 60]"
    },
    {
      "id": 2,
      "location": "[70, 70]"
    },
    {
      "id": 3,
      "location": "[80, 80]"
    }
  ]
}