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Transitioning to Python 3

Python 2.7 will no longer be maintained after January 1st, 2020. Accordingly, ROS Noetic will target only Python 3. These tutorials walk through the steps to transition a ROS 1 package from Python 2 to Python 3.

  1. Choose your branching strategy

    Choosing whether to support Melodic and Noetic in the same branch is the first decision to make when Transitioning a package to Python 3.

  2. Identify dependencies using Python

    The first step to determining if your packages support Python 3 is to determine which of your dependencies depend on Python.

  3. Source code changes to support Python 3

    Once dependencies have been transitioned, it's time to make source code changes to your package to support Python 3.

  4. Build your package using Python 3

    While not officially supported until Noetic, building and testing your package using Python 3 is essential to prepare for the upcoming release.

  5. Contributing Python 3 Fixes

    Consider contributing Python 3 fixes. Anything you contribute will help make the Noetic release work better for you.


2020-08-08 12:24