重复值处理 同样的数据在csdn和本地运行结果不一样

simple_sales="""
[
  {
    "购买时间": "2023-10-01 09:30:00",
    "订单金额": 6999
  },
  {
    "购买时间": "2023-10-01 10:15:00",
    "订单金额": 1999
  },
  {
    "购买时间": "2023-10-01 09:31:00",
    "订单金额": 6999
  },
  {
    "购买时间": "2023-10-01 11:20:00",
    "订单金额": 12999
  },
  {
    "购买时间": "2023-10-01 09:32:00",
    "订单金额": 6999
  },
  {
    "购买时间": "2023-10-01 14:45:00",
    "订单金额": 4599
  },
  {
    "购买时间": "2023-10-01 10:16:00",
    "订单金额": 1999
  },
  {
    "购买时间": "2023-10-01 15:30:00",
    "订单金额": 2999
  },
  {
    "购买时间": "2023-10-01 09:30:00",
    "订单金额": 6999
  },
  {
    "购买时间": "2023-10-01 16:10:00",
    "订单金额": 2399
  },
  {
    "购买时间": "2023-10-01 17:00:00",
    "订单金额": 4399
  },
  {
    "购买时间": "2023-10-02 09:30:00",
    "订单金额": 1999
  }
]
"""
import pandas as pd
sales_df = pd.read_json(simple_sales)
print(sales_df.duplicated())

simple_sales="""

[
  {

    "购买时间": "2023-10-01 09:30:00",
    "订单金额": 6999
  },
  {

    "购买时间": "2023-10-01 10:15:00",
    "订单金额": 1999
  },
  {

    "购买时间": "2023-10-01 09:31:00",
    "订单金额": 6999
  },
  {

    "购买时间": "2023-10-01 11:20:00",
    "订单金额": 12999
  },
  {

    "购买时间": "2023-10-01 09:32:00",
    "订单金额": 6999
  },
  {

    "购买时间": "2023-10-01 14:45:00",
    "订单金额": 4599
  },
  {

    "购买时间": "2023-10-01 10:16:00",
    "订单金额": 1999
  },
  {

    "购买时间": "2023-10-01 15:30:00",
    "订单金额": 2999
  },
  {

    "购买时间": "2023-10-01 09:30:00",
    "订单金额": 6999
  },
  {

    "购买时间": "2023-10-01 16:10:00",
    "订单金额": 2399
  },
  {

    "购买时间": "2023-10-01 17:00:00",
    "订单金额": 4399
  },
  {

    "购买时间": "2023-10-02 09:30:00",
    "订单金额": 1999
  }
]


"""
import pandas as pd
sales_df = pd.read_json(simple_sales)
print(sales_df.duplicated())