使用Python删除json文件中的新行提要。

Question

我正在从firebase下载数据，并将其导出到json中。在此之后，我尝试将其上传到bigquery中，但我需要删除大查询的新行提要才能接受它。

{   "ConnectionTime": 730669.644775033, 
    "objectId": "eHFvTUNqTR", 
    "CustomName": "Relay Controller", 
    "FirmwareRevision": "FW V1.96", 
    "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", 
    "PeripheralType": 9, 
    "updatedAt": "2016-12-13T15:50:41.626Z", 
    "Model": "DF Bluno", 
    "HardwareRevision": "HW V1.7", 
    "Serial": "0123456789", 
    "createdAt": "2016-12-13T15:50:41.626Z", 
    "Manufacturer": "DFRobot"}
{
    "ConnectionTime": 702937.7616419792, 
    "objectId": "uYuT3zgyez", 
    "CustomName": "Relay Controller", 
    "FirmwareRevision": "FW V1.96", 
    "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", 
    "PeripheralType": 9, 
    "updatedAt": "2016-12-13T08:08:29.829Z", 
    "Model": "DF Bluno", 
    "HardwareRevision": "HW V1.7", 
    "Serial": "0123456789", 
    "createdAt": "2016-12-13T08:08:29.829Z", 
    "Manufacturer": "DFRobot"}

这是我需要它的方式，但不知道如何做，除了手动做它。

{"ConnectionTime": 730669.644775033,"objectId": "eHFvTUNqTR","CustomName": "Relay Controller","FirmwareRevision": "FW V1.96","DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561","PeripheralType": 9,"updatedAt": "2016-12-13T15:50:41.626Z","Model": "DF Bluno","HardwareRevision": "HW V1.7","Serial": "0123456789","createdAt": "2016-12-13T15:50:41.626Z","Manufacturer": "DFRobot"}
{"ConnectionTime": 702937.7616419792, "objectId": "uYuT3zgyez", "CustomName": "Relay Controller", "FirmwareRevision": "FW V1.96", "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", "PeripheralType": 9, "updatedAt": "2016-12-13T08:08:29.829Z", "Model": "DF Bluno", "HardwareRevision": "HW V1.7", "Serial": "0123456789", "createdAt": "2016-12-13T08:08:29.829Z", "Manufacturer": "DFRobot"}

我正在使用python加载json，读取它，然后编写一个新的，但是找不到正确的代码。谢谢!

下面是我的python代码的大纲

import json
with open('nospacetest.json', 'r') as f:
  data_json=json.load(f)

#b= the file after code for no line breaks is added

with open('testnoline.json', 'w') as outfile:
  json.dump=(b, outfile)

Answer 1

在两行之间阅读时，我认为输入格式可能是单个JSON数组，所需的输出是该数组元素的新行分隔的JSON表示形式。如果是这样的话，这可能就是我们所需要的：

with open('testnoline.json', 'w') as outfile:
    for obj in data_json:
        outfile.write(json.dumps(obj) + "\n")

Answer 2

您只需要确保当您将数据indent=None到json时，dump：

with open('testnoline.json', 'w') as outfile:   
    json.dump(data_json, outfile, indent=None)

引用医生的话：

如果indent是一个非负整数，那么JSON数组元素和对象成员就会用这个缩进级别很好地打印出来。缩进级别为0或负，将只插入换行符。None (默认值)选择最紧凑的表示形式。