json python append records to file code example

Example 1: insert json file in python

a_dictionary = {"d": 4}

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

Example 2: add item to json file python

import json
with open('file.json', 'a') as outfile:
    outfile.write(json.dumps(data))
    outfile.write(",")
    outfile.close()

Example 3: 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)