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)