Answers for "json dump into file"

python json save to file

with open('output.json', 'w') as outfile:
    json.dump(data, outfile)

open json file python

import json

with open('data.txt') as json_file:
    data = json.load(json_file)

write json dump to file python

import json
import numpy as np

class NpEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, np.integer):
            return int(obj)
        elif isinstance(obj, np.floating):
            return float(obj)
        elif isinstance(obj, np.ndarray):
            return obj.tolist()
        else:
            return super(NpEncoder, self).default(obj)

# Your codes .... 
json.dumps(data, cls=NpEncoder)