I’m learning Python and Flask together. I’m updating a code example to the latest Flask version (2.2.2) and PyCharm is reporting the following warning:
Access to a protected member _get_current_object of a class
in reference to the first line of the send_mail method
app = current_app._get_current_object()
What is a more appropriate way to code the statement?
from threading import Thread from flask import current_app, render_template from flask_mail import Message from . import mail def send_async_email(app, msg): with app.app_context(): mail.send(msg) def send_email(to, subject, template, **kwargs): app = current_app._get_current_object() msg = Message(app.config['FLASKY_MAIL_SUBJECT_PREFIX'] + ' ' + subject, sender=app.config['FLASKY_MAIL_SENDER'], recipients=[to]) msg.body = render_template(template + '.txt', **kwargs) msg.html = render_template(template + '.html', **kwargs) thr = Thread(target=send_async_email, args=[app, msg]) thr.start() return thr
current_app is a proxy to your Flask app instance. It has your application’s context. You don’t need to access protected members from current_app class. Simply import it as app or alias it as app later on and perform your operations. For example:
# Importing and aliasing current_app from flask import current_app as app # this is perfectly fine sender = app.config['FLASKY_MAIL_SENDER']
You shouldn’t access protected members from a library or a framework. Only use members exposed by public API, or risk breaking your code in a future library update.
Answered By – Firelord
Answer Checked By – David Marino (Easybugfix Volunteer)