Question

我有一个JSON，我必须操纵，代码看起来像这样。我不得不操纵数据，因为在上传到BigQuery时我无法使用无效的数据部分。

import json

with open('firetobq_peripheral.json', 'r') as in_file:
    dicts = []
    for line in in_file.readlines() : 
        d = json.loads(line.strip())
        if d.get('Peripherals'): 
            del d['Peripherals']
        dicts += [d]

with open('firetobq_peripheral5.json', 'w') as out_file:
    out_file.write(json.dumps(dicts))
    out_file.write("\n")

然而，out_file.write("\n")并没有使JSON在新行上写下每组数据，就像我之前使用过的JSON一样。有谁知道为什么会这样，以及如何解决这个问题？谢谢您的帮助。

我需要像这样显示数据

{"AppName": "DataWorks", "foundedPeripheralCount": 1, "version": "1.6.1(8056)", "deviceType": "iPhone 6", "createdAt": "2017-04-05T07:05:30.408Z", "updatedAt": "2017-04-05T07:08:49.569Z",  "connectedPeripheralCount": 1, "iOSVersion": "10.2.1"}
{"objectId": "20H5Hg2INB", "foundedPeripheralCount": 0, "DeviceVendorID": "5B7F085E-B3B6-4270-97DC-F42903CDEAC1", "version": "1.3.5(5801)", "deviceType": "iPhone 6", "createdAt": "2015-11-10T06:16:45.459Z", "updatedAt": "2015-11-10T06:16:45.459Z", "connectedPeripheralCount": 0, "iOSVersion": "9.1"}
{"AppName": "DataWorks", "foundedPeripheralCount": 2, "version": "1.6.2(8069)", "deviceType": "iPhone 6s", "createdAt": "2017-04-12T10:05:05.937Z", "updatedAt": "2017-07-06T07:33:02.006Z", "connectedPeripheralCount": 8, "iOSVersion": "10.2.1"}

Answer 1

如果您希望完全按照读取的方式编写数据，则需要在dicts中迭代每个字典：

with open('firetobq_peripheral5.json', 'w') as out_file:
    for d in dicts:
        out_file.write(json.dumps(d))
        out_file.write("\n")

如果不需要，那么json.dump将是最佳选择。

Answer 2

with open("some_file.json", "w") as f: 
    f.write( 
        json.dumps(array_of_dictionaries).replace("},", "},\n")
    )

如何使用Python向JSON添加换行符函数

2 个答案: