how to configure a database in flask by khayam

1import sqlite3
2
3import click
4from flask import current_app, g
5from flask.cli import with_appcontext
6
7
8def get_db():
9    if 'db' not in g:
10        g.db = sqlite3.connect(
11            current_app.config['DATABASE'],
12            detect_types=sqlite3.PARSE_DECLTYPES
13        )
14        g.db.row_factory = sqlite3.Row
15
16    return g.db
17
18
19def close_db(e=None):
20    db = g.pop('db', None)
21
22    if db is not None:
23        db.close()
24