How to change data in JSON from Python?

Question

Python

There is some valid JSON file. Example:

{
    "example1": "hi",
    "example2": "hihi" 
}

How can I change the value of a specific element/key (eg example1) in Python. Or implement full read, change in dump and overwrite

Answer 1

Yes, JSON is not practical to change directly on disk. You need to load it, parse it, replace the value, then serialize the data again to JSON and save it to disk.

import json
with open('myfile.json') as f:
    data = json.load(f)
data['example1'] = 'bye'
with open('myfile.json', 'w') as f:
    json.dump(data, ensure_ascii=False, indent=4)