问题描述
这是一个示例json.以前,我能够解决附件和标签没有嵌套以及作为独立列的问题.任何帮助深表感谢!
here is an example json. Previously, I was able to solve for Attachments and tags not being nested and as induvidual columns. Any help is deeply appreaciated!
{
"Volumes": [{
"AvailabilityZone": "us-east-1a",
"Attachments": [{
"AttachTime": "2013-12-18T22:35:00.000Z",
"InstanceId": "i-1234567890abcdef0",
"VolumeId": "vol-049df61146c4d7901",
"State": "attached",
"DeleteOnTermination": true,
"Device": "/dev/sda1",
"Tags": [{
"Value": "DBJanitor-Private",
"Key": "Name"
}, {
"Value": "DBJanitor",
"Key": "Owner"
}, {
"Value": "Database",
"Key": "Product"
}, {
"Value": "DB Janitor",
"Key": "Portfolio"
}, {
"Value": "DB Service",
"Key": "Service"
}]
}],
"Ebs": {
"Status": "attached",
"DeleteOnTermination": true,
"VolumeId": "vol-049df61146c4d7901",
"AttachTime": "2016-09-14T19:49:11.000Z"
},
"VolumeType": "standard",
"VolumeId": "vol-049df61146c4d7901"
}]
}
推荐答案
您可以这样操作:
In [1]: fn = r'D:\temp\.data\40454898.json'
In [2]: with open(fn) as f:
...: data = json.load(f)
...:
In [14]: t = pd.io.json.json_normalize(data['Volumes'],
...: ['Attachments','Tags'],
...: [['Attachments', 'VolumeId'],
...: ['Attachments', 'InstanceId']])
...:
In [15]: t
Out[15]:
Key Value Attachments.InstanceId Attachments.VolumeId
0 Name DBJanitor-Private i-1234567890abcdef0 vol-049df61146c4d7901
1 Owner DBJanitor i-1234567890abcdef0 vol-049df61146c4d7901
2 Product Database i-1234567890abcdef0 vol-049df61146c4d7901
3 Portfolio DB Janitor i-1234567890abcdef0 vol-049df61146c4d7901
4 Service DB Service i-1234567890abcdef0 vol-049df61146c4d7901
注意:第二个参数['Attachments','Tags']
是指向嵌套记录(data['Values']->Attachments->Tags
)的路径,第三个参数[['Attachments', 'VolumeId'], ['Attachments', 'InstanceId']]
是指向外部元数据(data['Values']->Attachments->VolumeId
,data['Values']->Attachments->InstanceId
)
NOTE: second argument ['Attachments','Tags']
is a path to to our nested record (data['Values']->Attachments->Tags
) and third argument [['Attachments', 'VolumeId'], ['Attachments', 'InstanceId']]
is a path to outer metadata (data['Values']->Attachments->VolumeId
, data['Values']->Attachments->InstanceId
)
这篇关于将Nest Json模型嵌套到SQL表的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!