python - 如何使用 python pandas 库改变数据

Question

我有类似的数据框

import pandas as pd

x = [
    {
        "timestamp" :1576019484523,
        "status": "1"
    },
    {
        "timestamp" :1576019496337,
        "status": "0"
    },
    {
        "timestamp" :1576019548740,
        "status": "1"
    },
    {
        "timestamp" :1576020996586,
        "status": "0"
    }
]

data_frame = pd.DataFrame(x)

DataFrame
0  1576019484523      1
1  1576019496337      0
2  1576019548740      1
3  1576020996586      0

我想像这样转换这些数据:

[
    {
        "range" :"1576019484523 - 1576019496337",
        "status": "1"
    },
    {
        "range" : "1576019496337 - 1576019548740",
        "status": "0"
    },
    {
        "range" :"1576019548740 - 1576020996586",
        "status": "1"
    }
]

如果项目数量是奇数，我不知道如何解决这个问题。如果 pandas 中有任何我想知道的函数或任何对我在 python 中有帮助的函数

[t0-t1] status 0
[t1-t2] status 1
[t2-t3] status 0
[t3-t4] status 1

Answer 1

您可以在不需要 pandas 的情况下使用 - 使用 list comprehension :

[{'range': f"{i['timestamp']} - {j['timestamp']}", 'status': i['status']}
  for i, j in zip(x, x[1:])]

[输出]

[{'range': '1576019484523 - 1576019496337', 'status': '1'},
 {'range': '1576019496337 - 1576019548740', 'status': '0'},
 {'range': '1576019548740 - 1576020996586', 'status': '1'}]