python - How to extract specific data from JSON?

Question

I can't seem to extract specific data from JSON which I retrieved from a link. I wrote this code and seems to work fine up to x [print(x) that is] as you can see from the screenshot-1.

But, it's giving errors while executing the last 2 lines. [Screenshot-2] I saw this from a video on youtube and tried it on my own.

Maybe I am making a mistake somewhere, Can anybody please tell me where am I doing wrong?

Code:

import json
import urllib.request

connection = urllib.request.urlopen('http://py4e-data.dr-chuck.net/comments_42.json')
js = connection.read()
pj = json.loads(js)
x = json.dumps(pj,indent = 2)
#print(x)

for z in x:
    print(z["count"])

[] [screenshot-1]

[] [Screenshot-2]

Answer 1

As you well know JSON is a standard that allows to pass data from one programming language to another so they could consume them into their objects

an object that can be iterated is pj variable

import json
import urllib.request

connection = urllib.request.urlopen('http://py4e-data.dr-chuck.net/comments_42.json')
js = connection.read()
pj = json.loads(js)#stores dicts, python objects, iterate them
x = json.dumps(pj,indent = 2)#json here, remember is just a string, cant access them using x['key']


[print(z['count']) for z in pj['comments']]
[97, 97, 90, 90, 88, 87, 87, 80, 79, 79, 78, 76, 76, 72, ...]