Simple DB/Storage without SQL in python?

Question

Python

Hello.

Faced such a moment that you need to create a simple database so that the necessary data is saved after the program is restarted.

The data in the code is written in this way.

user_data = {"ID" :  {"Товар" : "Цена", "Товар1" : "Цена1", ...}}

That is, a two-dimensional dictionary, where at the first level the key is the user ID, and the value is another dictionary with keys - goods and values ​​- prices.

How to save and store it? What libraries to use for this?

Answer 1

Encode to json and write to file
Save

import json

user_data = {}
f  = open("config.txt", "w")
f.write(json.dumps(user_data))
f.close()

Read

import json

f = open("config.txt", "r")
user_data = json.loads(f.read())
f.close()

Answer 2

https://pypi.org/project/tinydb/

Answer 3

Judging by the data structure, SQL DBMS is better suited. For starters, you can use SQLite, or you can immediately use MySQL.

Answer 4

Shelve