Parsing a JSON using python-CodePudding

Attempting to parse and filter some data for an API I am trying to test. There does not appear to be a main key at the beginning of the dict, so when I attempt to loop through the dictionary, I get one of the two errors:

TypeError: string indices must be integers or KeyError, because the key is not being seen.

An example of the dict:

{
  "totalRecords": 2,
  "_links": {
    "self": "www.test.com",
    "next": null,
    "previous": null
  },
  "summaryOfServices": [
    {
      "data1": 12345678,
      "data2": 34567891,
      "data3": "Training",
      "data4": 1,
      "data5": 4,
      "data6": 37,
      "data7": 20
    },
    {
      "data1": 98765432,
      "data2": 55555555,
      "data3": "Training2",
      "data4": 0,
      "data5": 0,
      "data6": 7809,
      "data7": 0
    }
  ]
}

Snippet if the code:

resp = requests.get(url,
                    authHeaders)

rprint(url)

json_resp = resp.json()

for entry in json_resp:
        item_1 = entry["data1"]
        item_2 = entry["data2"]
        item_3 = entry["data3"]
        item_4 = entry["data4"]
        item_5 = entry["data5"]
        item_6 = entry["data6"]
        count  =1
        rprint(f"Data 1: {item_1}\tData 2: {item_2}\t"
               f"Data 3: {item_3}\tData 4: {item_4}\t"
               f"\tData 5: {item_5}\tData 6: {item_6}\n")

TypeError: string indices must be integers

or I get

KeyError: 'data1'

CodePudding user response：

Your outer object is a dictionary. It looks like you want to iterate over the summaryOfServices data, so you have to fetch that key:

import json

json_string = '''{
  "totalRecords": 2,
  "_links": {
    "self": "www.test.com",
    "next": null,
    "previous": null
  },
  "summaryOfServices": [
    {
      "data1": 12345678,
      "data2": 34567891,
      "data3": "Training",
      "data4": 1,
      "data5": 4,
      "data6": 37,
      "data7": 20
    },
    {
      "data1": 98765432,
      "data2": 55555555,
      "data3": "Training2",
      "data4": 0,
      "data5": 0,
      "data6": 7809,
      "data7": 0
    }
  ]
}'''

count = 0
json_resp = json.loads(json_string)
for entry in json_resp['summaryOfServices']:
        item_1 = entry["data1"]
        item_2 = entry["data2"]
        item_3 = entry["data3"]
        item_4 = entry["data4"]
        item_5 = entry["data5"]
        item_6 = entry["data6"]
        count  =1
        print(f"Data 1: {item_1}\tData 2: {item_2}\t"
               f"Data 3: {item_3}\tData 4: {item_4}\t"
               f"\tData 5: {item_5}\tData 6: {item_6}")

Output:

Data 1: 12345678    Data 2: 34567891    Data 3: Training    Data 4: 1       Data 5: 4   Data 6: 37
Data 1: 98765432    Data 2: 55555555    Data 3: Training2   Data 4: 0       Data 5: 0   Data 6: 7809

CodePudding user response：

Are you sure you are iterating over the correct thing?

You may want to modify your code to:

resp = requests.get(url,
                    authHeaders)

rprint(url)

json_resp = resp.json()
summary_of_services = json_resp["summaryOfServices"]

for entry in summary_of_services:
        item_1 = entry["data1"]
        item_2 = entry["data2"]
        item_3 = entry["data3"]
        item_4 = entry["data4"]
        item_5 = entry["data5"]
        item_6 = entry["data6"]
        count  =1
        rprint(f"Data 1: {item_1}\tData 2: {item_2}\t"
               f"Data 3: {item_3}\tData 4: {item_4}\t"
               f"\tData 5: {item_5}\tData 6: {item_6}\n")

Then you will want to think about edge cases like can summaryOfServices be None or something that cannot be iterated? What if the http get call fails, etc.