Upgrade to Python 3 & Django 2

[geoffroy-noel-ddh]

Python 2 won't be maintained past Jan 2020. Also Archetype is still on Django 1.8. Both need to be urgently upgraded as they are causing more and more trouble in terms of server settings, stack compatibility, and security concerns.

This is potentially a major task which will require between one and six weeks of development for one person. Upgrade and testing of individual instances should be relatively easy after that but will happen progressively.

[samueljsb]

Would this upgrade require compatibility to be maintained with Python2, or would it be acceptable to break compatibility?

[geoffroy-noel-ddh]

Hi @samueljsb we are not currently planning to preserve compatibility with Python 2 as KDL maintains the majority of the DigiPal/Archetype instances and we are not aware of substantial third-party extensions. The upgrade is scheduled for the first half of next year.