JAVASCRIPT

python append to json file

import json
with open(path) as f
	data = json.load(f)
	data["new"] = "penguin"
	json.dump(data,f)

append json data in file python

import json

def write_json(filename, json_data):
    with open(filename) as f:
        obj = json.load(f)

    obj.append(json_data)
    
    with open(filename,"w+") as of:
        json.dump(obj, of)