Extracting specific JSON values in python-CodePudding

JSON return from spotify api. Example:

{
    "tracks": {
        "href": "https://api.spotify.com/v1/search?query=Stero Hearts&type=track&offset=0&limit=1",
        "items": [
            {
                "album": {
                    "album_type": "album",
                    "artists": [
                        {
                            "external_urls": {
                                "spotify": "https://open.spotify.com/artist/4IJczjB0fJ04gs4uvP0Fli"
                            },
                            "href": "https://api.spotify.com/v1/artists/4IJczjB0fJ04gs4uvP0Fli",
                            "id": "4IJczjB0fJ04gs4uvP0Fli",
                            "name": "Gym Class Heroes",
                            "type": "artist",
                            "uri": "spotify:artist:4IJczjB0fJ04gs4uvP0Fli"
                        }
                    ]
                }
            }
        ]
    }
}

Broken Code

import requests, json


spotifytrack = input("Name of Song?\\n")
link = "https://api.spotify.com/v1/search?q="   spotifytrack   "&type=track&limit=1"
token = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
header = {
    "Authorization": "Bearer {}".format(token),
    "Content-Type": "application/json",
    "Accept": "application/json",
}
auth_response = requests.get(link, headers=header)
pretty_response = json.dumps(auth_response.json(), indent=4)
data_by_user = {}


for d in auth_response:
    data_by_user[d["artist"]] = d
    print(data_by_user["uri"])


"""
def find_track_from_json(auth_response, artist):
    return [p for p in auth_response if p["artist"] == artist][0]["uri"]


urii = find_track_from_json(auth_response, "uri")
print(urii)
x = load.json(auth_response.json())
print("Here is the data whic we have imported\n")
print(pretty_response)
print(x["name"])
print(x["uri"])
print(x["spotify"])
"""

Errors noticed:

  File "spotify.py", line 19, in <module>
    data_by_user[d["artist"]] = d
TypeError: byte indices must be integers or slices, not str

The aim is to convert word search to link in a cli application.

I tried load.json which i saw in some website and also tried def.

I expected the program to find out the artist name and uri from the json and print it in the cli interface.

CodePudding user response：

You are iterating over the encoded json string:

auth_response = requests.get(link, headers=header)
for d in auth_response:

Python is complaining that you aren't providing a numerical index, which is correct as auth_response is just a string!

You should call json.loads to decode the string, and then you can iterate over it.

auth_response = requests.get(link, headers=header)
decoded_auth_response = json.loads(auth_response)
data_by_user = {}
for d in decoded_auth_response:
    data_by_user[d["artist"]] = d

As you haven't provided the full json output from the API call I'm not sure what data is actually in decoded_auth_response, and you haven't described what your expected output would look like, so you may need to do some more work to find the correct data in each iteration.

CodePudding user response：

The result from requests.get() is a requests.Response object. As far as I can see you want to iterate over the response body which is JSON. The requests.Response object has a .json() method which returns a dict from the response JSON.

Looking at the response you would probably want to iterate over resp_json['tracks']['items'] which is a list.

So to summarize your code should look something like this:

auth_response = requests.get(link, headers=header)
items = auth_response.json()['tracks']['items']
for d in items:
    print(d)