TypeError：from_dict（）得到了意外的关键字参数“ index”

Question

我有看起来像这样的json：

{
  "formatVersion" : "v1.0",
  "disclaimer" : "This pricing list is for informational purposes only ..."
  "offerCode" : "AmazonEC2",
  "version" : "20181122020351",
  "publicationDate" : "2018-11-22T02:03:51Z",
  "products" : {
    "G5FFNNK98ETA2UBE" : {
      "sku" : "G5FFNNK98ETA2UBE",
      "productFamily" : "Compute Instance",
      "attributes" : {
        "servicecode" : "AmazonEC2",
        "location" : "Asia Pacific (Tokyo)",
        "locationType" : "AWS Region",
        "instanceType" : "c4.4xlarge",
        "currentGeneration" : "Yes",
        "instanceFamily" : "Compute optimized",
        "vcpu" : "16",
        "physicalProcessor" : "Intel Xeon E5-2666 v3 (Haswell)",
        "clockSpeed" : "2.9 GHz",
        "memory" : "30 GiB",
        "storage" : "EBS only",

我正在尝试使用以下代码将其转换为Pandas DataFrame：

df = pd.DataFrame()

for sku, data in json.loads(ec2offer)['products'].items():
    if data['productFamily'] == 'Compute Instance':
        new_df = pd.DataFrame.from_dict(data['attributes'], index=[0])
        df.append(new_df, ignore_index=True)

print(df)    

在添加index=[0] ，我得到了错误“ ValueError：如果使用所有标量值，则必须传递一个索引”，因此我根据基于变量中的值构造pandas DataFrame的答案，添加了“ ValueError：如果使用所有标量值，您必须传递一个索引”

现在我得到了这个错误：

TypeError：from_dict（）得到了意外的关键字参数“ index”

TL; DR

忘记上面的代码。 将上述json中的每个“属性”结构添加到Pandas数据框中自己的行中，最简单的方法是什么？

预期的输出

instanceType   memory   ...
c4.4xlarge     30 Gib   ...
...            ...      ...

Answer 1

jsonstr={
"formatVersion": "v1.0",
"disclaimer": "This pricing list is for informational purposes only ...",
"offerCode": "AmazonEC2",
"version": "20181122020351",
"publicationDate": "2018-11-22T02:03:51Z",
"products": {
    "G5FFNNK98ETA2UBE": {
        "sku": "G5FFNNK98ETA2UBE",
        "productFamily": "Compute Instance",
        "attributes": {
            "servicecode": "AmazonEC2",
            "location": "Asia Pacific (Tokyo)",
            "locationType": "AWS Region",
            "instanceType": "c4.4xlarge",
            "currentGeneration": "Yes",
            "instanceFamily": "Compute optimized",
            "vcpu": "16",
            "physicalProcessor": "Intel Xeon E5-2666 v3 (Haswell)",
            "clockSpeed": "2.9 GHz",
            "memory": "30 GiB",
            "storage": "EBS only"
        }
    },
    "G5FFNNK98ETA2VIB": {
        "sku": "G5FFNNK98ETA2UBE",
        "productFamily": "Compute Instance",
        "attributes": {
            "servicecode": "AmazonEC22",
            "location": "Asia Pacific (Tokyo)",
            "locationType": "AWS Region",
            "instanceType": "c4.4xlarge",
            "currentGeneration": "Yes",
            "instanceFamily": "Compute optimized",
            "vcpu": "16",
            "physicalProcessor": "Intel Xeon E5-2666 v3 (Haswell)",
            "clockSpeed": "2.9 GHz",
            "memory": "30 GiB",
            "storage": "EBS only"
        }
    }
}

}

import pandas as pd
d={}
for product in jsonstr['products'].keys():
   d[product]={}
   d[product]=jsonstr['products'][product]['attributes']
df=pd.DataFrame(d).T.reset_index().drop('index',1)

输出：

df

Answer 2

您可以像在此问题中一样使用json_normalize ：