Python Forum

I'm trying to iterate through all of the questions and answers. What am I doing incorrectly?

This works and prints out entire JSON from the top of the hierarchy

import json


with open('D:/trivia_json/dev-v2.0.json', encoding='utf-8') as data_file:
    data = json.loads(data_file.read())


for i in range (0, len (data['data'])):
    print(data['data'])

This fails and show the error.
print(data['data']['title'])
TypeError: list indices must be integers or slices, not str

import json


with open('D:/trivia_json/dev-v2.0.json', encoding='utf-8') as data_file:
    data = json.loads(data_file.read())


for i in range (0, len (data['data'])):
    print(data['data']['title'])

-------------BELOW IS FIRST PART OF JSON

{
  "version": "v2.0",
  "data": [
    {
      "title": "Normans",
      "paragraphs": [
        {
          "qas": [
            {
              "question": "In what country is Normandy located?",
              "id": "56ddde6b9a695914005b9628",
              "answers": [
                {
                  "text": "France",
                  "answer_start": 159
                },
                {
                  "text": "France",
                  "answer_start": 159
                },
                {
                  "text": "France",
                  "answer_start": 159
                },
                {
                  "text": "France",
                  "answer_start": 159
                }
              ],
              "is_impossible": false
            },
            {
              "question": "When were the Normans in Normandy?",
              "id": "56ddde6b9a695914005b9629",
              "answers": [
                {
                  "text": "10th and 11th centuries",
                  "answer_start": 94
                },
                {
                  "text": "in the 10th and 11th centuries",
                  "answer_start": 87
                },
                {
                  "text": "10th and 11th centuries",
                  "answer_start": 94
                },
                {
                  "text": "10th and 11th centuries",
                  "answer_start": 94
                }
              ],
              "is_impossible": false
            },

Take a look at this part of json:

Quote:

{
  "version": "v2.0",
  "data": [
    {

data['data'] contains a list of which first item is dictionary, so you could try:
data['data'][0]['title'] instead

Btw you could do it this way:

import json
 
with open('data.json', encoding='utf-8') as f:
    data = json.load(f)

for topic in data['data']:
    print(topic['title'])
    
    for paragraph in topic['paragraphs']:
        #print(paragraph['context'])

        for qa in paragraph['qas']:
            print(qa['question'])
            
            for i, answer in enumerate(qa['answers']):
                print(i, answer['text'])

thanks

this does show all the titles.
data['data'][i]['title']
i+=1

So to show the first question of each title it would be ['paragraphs']['qas'][0]['question'] right?

(May-22-2019, 06:18 PM)michalmonday Wrote: [ -> ]Take a look at this part of json:
Quote:
{
  "version": "v2.0",
  "data": [
    {
data['data'] contains a list of which first item is dictionary, so you could try:
data['data'][0]['title'] instead

Btw you could do it this way:
import json
 
with open('data.json', encoding='utf-8') as f:
    data = json.load(f)

for topic in data['data']:
    print(topic['title'])
    
    for paragraph in topic['paragraphs']:
        #print(paragraph['context'])

        for qa in paragraph['qas']:
            print(qa['question'])
            
            for i, answer in enumerate(qa['answers']):
                print(i, answer['text'])

That did it. Thanks a million.

jmair

michalmonday

jmair