write json dump to file python

1import json
2
3data = {"key": "value"}
4
5with open('data.json', 'w') as jsonfile:
6    json.dump(data, jsonfile)
7

1import json
2with open('data.json', 'w') as f:
3    json.dump(data, f)

1import json
2import numpy as np
3
4class NpEncoder(json.JSONEncoder):
5    def default(self, obj):
6        if isinstance(obj, np.integer):
7            return int(obj)
8        elif isinstance(obj, np.floating):
9            return float(obj)
10        elif isinstance(obj, np.ndarray):
11            return obj.tolist()
12        else:
13            return super(NpEncoder, self).default(obj)
14
15# Your codes .... 
16json.dumps(data, cls=NpEncoder)