AttributeError: 'str' object has no attribute 'json'

Question

I wrote little script on python 3.7 to receive actual browser version

Here is it:

import json


def json_open():
    file_json = open('/Users/user/PycharmProjects/Test/configuration.json')
    return json.load(file_json)


def get_last_version(browser_name):
    f = json_open()
    res = (f['global']['link_to_latest_browser_version'])
    last_version = repr(res.json()['latest']['client'][browser_name]['version'])
    #print(last_version[1:-1])
    return last_version[1:-1]

Also, json file exists, but it does not matter now.

Received:

AttributeError: 'str' object has no attribute 'json'.

In row

last_version = repr(res.json()['latest']['client'][browser_name]['version'])

Please, tell me what is my mistake?

Can you show the JSON file or at least the structure?

HNMN3
– HNMN3

2020-06-02 14:09:28 +00:00
Commented Jun 2, 2020 at 14:09 — HNMN3
– HNMN3, Commented Jun 2, 2020 at 14:09

Ramtin Nouri · Accepted Answer · 2020-06-02 14:20:12Z

4

If you are trying to convert res as a json object try json.loads(res) instead of res.json()

answered Jun 2, 2020 at 14:20

Ramtin Nouri

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Comments

panadestein · Accepted Answer · 2020-06-03 09:36:18Z

2

Try this:

import json

FILEJSON = '/Users/user/PycharmProjects/Test/configuration.json'

def get_last_version(browser_name):
    with open(FILEJSON, 'r') as fson:  
        res = json.load(fson)
    last_version = res['global']['link_to_latest_browser_version']\
                    ['latest']['client'][browser_name]['version'][1:-1]
    return last_version

I think that the json_open function is unnecessary. Also take into account that the behavior of the json.load() method depends on the type of file you are reading.

edited Jun 3, 2020 at 9:36

answered Jun 2, 2020 at 14:29

panadestein

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1 Comment

panadestein Over a year ago

I have corrected the answer, there was a typo. I meant json.load

Sy Ker · Accepted Answer · 2020-06-02 14:21:01Z

1

Ok, the problem is here:

    last_version = repr(res.json()['latest']['client'][browser_name]['version'])

A JSON object is basically a dictionary. So when you do json['key'] it returns the content, not a json object.

Here res is a string, not a json object and thus does not have the .json() attribute.

Edit:
If you want a string to be return in your situation:

res = json.loads(f['global']['link_to_latest_browser_version'])
last_version = res['latest']['client'][browser_name]['version']

return last_version

edited Jun 2, 2020 at 14:21

answered Jun 2, 2020 at 14:12

Sy Ker

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2 Comments

Vas23Vewe Over a year ago

It is idea, I want to receive output exactly in string? Is it possible?

Sy Ker Over a year ago

Just return res, it is already a string. Try to print(res) or print(type(res)), you'll see !

Ottotos · Accepted Answer · 2020-06-02 14:07:31Z

0

Your "res" variable is of type string. Strings do not have an attribute called json. So res.json() is invalid.

answered Jun 2, 2020 at 14:07

Ottotos

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4 Comments

Vas23Vewe Over a year ago

I want to receive return exactly in str. Any ideas how perform it?

Ottotos Over a year ago

Could you be more clear on what exactly it is you want to achieve with res.json()?

Vas23Vewe Over a year ago

The output should be '83.0.4103.61'. Type str

Ottotos Over a year ago

What is the value of res ?

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