add json to existing json file code example

Example 1: add new element to existing json object

json = JSON.stringify(jsObj);
 console.log(json)

Example 2: how to add items to an existing json file python

a_dictionary = {"d": 4}

with open("sample_file.json", "r+") as file:
    data = json.load(file)
    update(a_dictionary)
    seek(0)
    dump(data, file)