How to save an array after a program restart?

Question

Python

There are arrays of photos and names that are replenished with the program, how can you save changes in the arrays after the program is terminated?

Answer 1

You can use the json module
Write:

import json
a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
with open('test.json', 'w') as f:
    f.write(json.dumps(a))

Reading:

import json
with open('test.json', 'r') as f:
    b = json.loads(str(f.read()))
print(b)

You need to write the array to the json file, and then read the array from the file. If anything, json is built-in and you don't need to install it

Answer 2

Another pickle option.

import pickle
arr = ["one.jpg", "two.jpg"]
with open('arr.pickle', 'wb') as f:
    pickle.dump(arr, f, 2)

import pickle
with open('arr.pickle', 'rb') as f:
    arr = pickle.load(f)

print(arr)

Answer 3

Store photos and other data in a database.