python - 在 Python 中重命名 JSON 键

Question

我正在尝试处理一些日志并将日志内容发布到 API 进行进一步处理。在将数据发布到 API 之前，我需要重命名 key ，但它似乎不起作用。

这就是我到目前为止所拥有的。

import re
import json

logs = ['2016-10-13 17:04:50 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"key1": "data", "key2":"data"}',
        '2016-10-13 17:05:10 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"key1": "data", "key2":"data"}']

newLogs = []
for log in logs:
    data = (re.compile(r"Rs:({[^}]*})").search(log)).group(1))
    data.replace('key1','keyA').replace('key2','keyB')
    newLogs.append(data)


# Current output - the keys are not changed
print (newLogs)
>>>> ['2016-10-13 17:04:50 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"key1": "data", "key2":"data"}',
      '2016-10-13 17:05:10 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"key1": "data", "key2":"data"}']

#Desired output
print (newLogs)
>>>> ['2016-10-13 17:04:50 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"keyA": "data", "keyB":"data"}',
      '2016-10-13 17:05:10 - info - uri:"GET x/y/z" ip:1.1.1.1 Rs:{"keyA": "data", "keyB":"data"}']

Answer 1

Python 中的字符串是不可变的。因此，方法 replace 返回一个新字符串，您必须在某个变量中捕获该字符串:

data = data.replace('key1','keyA').replace('key2','keyB')