Подключение к Postgresql в переменной окружения .env какие ключи добавлять?

Question

[flyagin]

Есть config.py:

DB_URI = '{driver}://{auth}{server}/{db_name}'.format(
    driver=DB_DRIVER,
    auth='{login}:{password}@'.format(login=DB_LOGIN, password=DB_PASS) if DB_LOGIN and DB_PASS else '',
    server='{host}:{port}'.format(host=DB_HOST, port=DB_PORT) if DB_HOST and DB_PORT else '',
    host=DB_HOST,
    port=DB_PORT,
    db_name=DB_NAME
)

Есть .env:

DB_DRIVER = postgres
DB_NAME = database_name
DB_LOGIN = database_user
DB_PASS = database_password
DB_HOST = localhost
DB_PORT = 5432
DB_URI = postgresql://database_user:database_password@@db:5432/database_name

В логах ошибка:

raise exc.NoSuchModuleError(
sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:postgres