loading json file and base64 decoding a value

credentials.json

{
	"username": "testuser",
	"password": "bXlwYXNzd29yZA=="
}

test.py

import base64
import json

with open('credentials.json') as json_data:
    d = json.load(json_data)
    encoded_pass = d["password"]

decoded_password = base64.b64decode(encoded_pass)

# decoded pass now lives in `decoded_password`
print decoded_password