Zope 5.0 released

Few open source projects have been running for over 20 years, but Zope is one of them. Latest release adds support for Python 3.9 among other things.

Zope is the original open source web application server written in Python, featuring a component architecture and an object-oriented, hierarchical data model.

This release

drops support for Python 2.7 and 3.5
drops support for Zserver
adds support for the newly released Python 3.9

Although this release is a major one, it should be possible to use it without any changes if the following preconditions are met:

Your project runs on the latest Zope 4 release on Python 3.6+ and does not use ZServer.
Neither your tests nor running your Zope instance shows DeprecationWarnings.

Additionally, this release contains some minor features and bug fixes that have been backported to Zope 4 where possible.

As Zope 5 is now released, Zope 4 is put into bugfix mode until 2021-12-31.
(See the roadmap for details: https://zope.readthedocs.io/en/latest/roadmap.html 3)

For details about this release see the what’s-new-section and the changelog:

To install the new version see https://zope.readthedocs.io/en/latest/INSTALL.html