Merge two json arrays into one array in python

Question

I have multiple json files containing a json array object in the following format.

[
    {
        "appId": "1",
        "userName": "zrqxnav2ktobg5ph4y6inxm4t22oqxnj",
        "appManagerError": {
            "errorCode": "",
            "errorMsg": ""
        },
        "endpoints": [
            {
                "path": "unknown"
            }
        ]
    }
]

I would like to merge all the json files [in the same format] in a single file. something like this.

[
    {
        "appId": "1",
        "userName": "zrqxnav2ktobg5ph4y6inxm4t22oqxnj",
        "appManagerError": {
            "errorCode": "",
            "errorMsg": ""
        },
        "endpoints": [
            {
                "path": "unknown"
            }
        ]
    },
    {
        "appId": "2",
        "userName": "zrjsjdsj34sdkjskt22oqxnj",
        "appManagerError": {
            "errorCode": "",
            "errorMsg": ""
        },
        "endpoints": [
            {
                "path": "known"
            }
        ]
    }
]

Fortunately, I was able to get this done in the shell using jq.

 cat temp1.json temp2.json | jq -s add > temp.json || exit $?

But I can't find anything similar in python.

Answer 1

import json

content = []
filenames = ['temp1.json', 'temp2.json']
for filename in filenames:
    with open(filename, 'r') as f:
        content += json.load(f)
with open('temp.json', 'w') as f:
    json.dump(content, f, indent=4)

Answer 2

You can use that following code assuming that json_list is a list containing all yours stringified json files

from itertools import chain
import json

dictios = list()
for e in json_list:
    dictios.append(json.loads(e))

merged =  json.dumps(dict(chain.from_iterable(d.items() for d in dictios)))

merged will contain a stringified json which is the fusion of all your previous json files