ValueError: DataFrame index must be unique for orient='columns'

错误信息： ValueError: DataFrame index must be unique for orient='columns'

官网解释： pandas.pydata.org/pandas-docs…

我的解决：ret.to_json(orient="split")

jso格式如下 行列索引和数据分为3个dict 对应的value为list 其中data为二维

{
  "columns": [
    "2021-03-31",
    "2020-12-31",
   ...
    "2015-03-31",
    "2021-06-30"
  ],
  "index": [
    "总资产净利润率",
    "现金周期",
    "流动资产周转率",
    "总资产周转率",
    ...],
  "data": [
    [
      0.0096652355,
      -0.8293684813,
      -5.4261097763,
      0.1362314567,
      0.0055063438,
      0.0435877893,
      -0.299344604,
 ...
    ],
    [
      509.4200002625,
      576.980000113,
      1809.5799991314,
      956.8100006403,
      683.0100002288,
      651.5400001291,
      ...
      ]]

dataframe数据 如下