大型JSON fi上的复杂JMESPath筛选器

Question

请考虑下面的JSON提取（数据要大得多，但这是一个较短的片段，我正在尝试使用）

jsonData = """{
  "products" : {
    "DQ578CGN99KG6ECF" : {
      "sku" : "DQ578CGN99KG6ECF",
      "productFamily" : "Compute",
      "attributes" : {
        "location" : "US East (N. Virginia)",
        "instanceType" : "hs1.8xlarge",
        "tenancy" : "Shared",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "NA"
      }
    },
    "G2N9F3PVUVK8ZTGP" : {
      "sku" : "G2N9F3PVUVK8ZTGP",
      "productFamily" : "Instance",
      "attributes" : {
        "location" : "Asia Pacific (Seoul)",
        "instanceType" : "i2.xlarge",
        "tenancy" : "Host",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "SQL Server Enterprise"
      }
    },
    "FBZZ2TKXWWY5HZRX" : {
      "sku" : "FBZZ2TKXWWY5HZRX",
      "productFamily" : "Compute",
      "attributes" : {
        "location" : "Asia Pacific (Seoul)",
        "instanceType" : "i2.4xlarge",
        "tenancy" : "Dedicated",
        "operatingSystem" : "SUSE",
        "licenseModel" : "No License required",
        "preInstalledSw" : "NA"
      }
    }
  }
}"""

我无法创建一个合适的过滤器来查找所有使用“Windows”作为操作系统和共享租赁的产品。在

我说到这里：

^{pr2}$

不过，我还是这样把sku弄丢了。在

结果：

[{        
        "location" : "US East (N. Virginia)",
        "instanceType" : "hs1.8xlarge",
        "tenancy" : "Shared",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "NA"
}]

我想要的是：

[
  { "sku": "DQ578CGN99KG6ECF",
    "attributes" : {
        "location" : "US East (N. Virginia)",
        "instanceType" : "hs1.8xlarge",
        "tenancy" : "Shared",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "NA"
    }
}]

你知道怎么得到结果吗？在

Answer 1

你可以用一个查询完成它：

products.*.{\"attributes\":attributes,\"sku\":sku}[?attributes.operatingSystem==`Windows` && attributes.tenancy==`Shared`]

Answer 2

好吧，我继续寻找答案，我终于成功地得到了我的结果！在

关键是要分两步来做到这一点：）

这是我现在使用的代码：

#!/usr/bin/env python
try:
    # For Python 3.0 and later
    from urllib.request import urlopen
except ImportError:
    # Fall back to Python 2's urllib2
    from urllib2 import urlopen

import json, jmespath

jsonData = """{
  "products" : {
    "DQ578CGN99KG6ECF" : {
      "sku" : "DQ578CGN99KG6ECF",
      "productFamily" : "Compute",
      "attributes" : {
        "location" : "US East (N. Virginia)",
        "instanceType" : "hs1.8xlarge",
        "tenancy" : "Shared",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "NA"
      }
    },
    "G2N9F3PVUVK8ZTGP" : {
      "sku" : "G2N9F3PVUVK8ZTGP",
      "productFamily" : "Instance",
      "attributes" : {
        "location" : "Asia Pacific (Seoul)",
        "instanceType" : "i2.xlarge",
        "tenancy" : "Host",
        "operatingSystem" : "Windows",
        "licenseModel" : "License Included",
        "preInstalledSw" : "SQL Server Enterprise"
      }
    },
    "FBZZ2TKXWWY5HZRX" : {
      "sku" : "FBZZ2TKXWWY5HZRX",
      "productFamily" : "Compute",
      "attributes" : {
        "location" : "Asia Pacific (Seoul)",
        "instanceType" : "i2.4xlarge",
        "tenancy" : "Dedicated",
        "operatingSystem" : "SUSE",
        "licenseModel" : "No License required",
        "preInstalledSw" : "NA"
      }
    }
  }
}"""

priceJson = json.loads(jsonData)

query = "products.*.{sku: sku, location: attributes.location, instanceType: attributes.instanceType, tenancy: attributes.tenancy, operatingSystem: attributes.operatingSystem, licenseModel: attributes.licenseModel, preInstalledSw: attributes.preInstalledSw}"
output_dict = jmespath.search(query, priceJson)

query2 = "[?operatingSystem=='Windows' && tenancy=='Shared']"
output_dict = jmespath.search(query2, output_dict)

print(output_dict)

结果是：

^{pr2}$