BEP 5: Python 2 Support Timeline
| BEP 5 | Python 2 Support Timeline |
|---|---|
| Authors | Bryan Van de Ven |
| Status | Implemented |
| Discussion | https://github.com/bokeh/bokeh/issues/8463 |
| https://github.com/bokeh/bokeh/issues/9295 |
In order to reduce the ongoing maintenance burden on the Core Team, the Bokeh Project will drop support for Python 2 on or before January 1, 2020 (the End-of-Life date for Python 2).
This document details the timeline for dropping Bokeh support for Python 2.
The Bokeh project will sign the Python 3 Statement before the end of 2018, and publicize this event.
Release announcements will include a prominent reminder that Bokeh Python 2 support will be ending on or before the Python 2 EOL date. Periodic reminders will also be made on other channels, e.g. Twitter, Gitter, and Discourse.
In Q4 2019, a new minor version release will be made to serve as the "Long Term Support for Python 2". For example, if the latest previous release is 1.7.2, then Bokeh version 1.8 will be made at this time.
This new minor version will be the final Bokeh version that supports Python 2. No future enhancements or bugfixes are planned to be backported to this branch.
Shortly after the release for "LTS for Python 2", the next release will be a new major version that removes all code specific to Python 2 (e.g. use of the six compatibility library), and sets Python>=3.6 as the minimum supported Python version. For example, if the LTS for Python 2 is version 1.8, then Bokeh version 2.0 will be made at this time.
As appropriate, other large or incompatible changes may also be made coincident with this release, to take advantage of the bump in major number.
Bokeh version 1.4.0 is the last version to support Python 2.
| Date | Change |
|---|---|
| 2019-05-24 | Replace reference to mailing list with Discourse |
| 2019-10-19 | Update minimum Python version to 3.6 per new consensus |
| 2020-06-17 | Update outcomes section |