Selecting multiple lines PyCharm - Mac
I would suggest this small video for PyCharm users. These shortcuts can simplify life a lot.
Posts
Good articles on Celery groups, and chords
The first article gives deep and profound explanation how groups and chords can be handled. What is the most valuable, from my point of view, are database models implemented in Django-ORM to embody tasks persistence. I recommend it to read. The second article is more of introductory level. Good to read, but I would not expect to much.
Authorisation frameworks for a project
This is a list of promising authorisation frameworks. I like Casbin because of it simplicity of installation and usage.