Python-将数据附加到json文件

Question

I have the following data in my c.json file:

{
    "192.168.0.129": {
        "username": "me", 
        "streaming": "Spotify", 
        "name": "John", 
        "email": "john@gmail.com"
    }
}

and this other data that I want to append it to:

new_data = {'next_songs': ['song1', 'song2']}

for that purpose I'm doing this:

with open('c.json', 'r') as json_data: 
    data = json.load(json_data)

data.update(new_data)

with open('c.json', 'w') as json_data: 
    json.dump(data, json_data, indent=4)

this works, but no quite, because I get:

{
    "next_songs": [
        "song1", 
        "song2"
    ], 
    "192.168.0.129": {
        "username": "me", 
        "streaming": "Spotify", 
        "name": "John", 
        "email": "john@gmail.com"
    }
}

and I want appended data to be a value under the key "192.168.0.129" , like so:

{
    "192.168.0.129": {
        "username": "me", 
        "streaming": "Spotify", 
        "name": "John", 
        "email": "john@gmail.com"
        "new_data": ["song1", "song2"], 
    }
}

how do I achieve this?

Answer 1

Only a certain dict property "192.168.0.129" (which is the inner dict) should be updated, not the whole main dict:

...
data["192.168.0.129"].update(new_data)

Answer 2

It looks like you may be updating the wrong dictionary

data.update(new_data) should be data["192.168.0.129"].update(new_data)