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Python 3 Support

Ansible 2.5 and above work with Python 3. Previous to 2.5, using Python 3 was considered a tech preview. This topic discusses how to set up your controller and managed machines to use Python 3.

On the controller we support Python 3.5 or greater and Python 2.7 or greater. Module-side, we support Python 3.5 or greater and Python 2.6 or greater.


On the controller side

The easiest way to run /usr/bin/ansible under Python 3 is to install it with the Python3 version of pip. This will make the default /usr/bin/ansible run with Python3:

If you are running Ansible Running ansible-base from source (devel) and want to use Python 3 with your source checkout, run your command via python3. For example:

Individual Linux distribution packages may be packaged for Python2 or Python3. When running from distro packages you'll only be able to use Ansible with the Python version for which it was installed. Sometimes distros will provide a means of installing for several Python versions (via a separate package or via some commands that are run after install). You'll need to check with your distro to see if that applies in your case.


Using Python 3 on the managed machines with commands and playbooks


See also

Interpreter Discovery for more information.


See also

How to build your inventory for more information.

Note that you can also use the -e command line option to manually set the python interpreter when you run a command. This can be useful if you want to test whether a specific module or playbook has any bugs under Python 3. For example:


What to do if an incompatibility is found

We have spent several releases squashing bugs and adding new tests so that Ansible's core feature set runs under both Python 2 and Python 3. However, bugs may still exist in edge cases and many of the modules shipped with Ansible are maintained by the community and not all of those may be ported yet.

If you find a bug running under Python 3 you can submit a bug report on Ansible's GitHub project. Be sure to mention Python3 in the bug report so that the right people look at it.

If you would like to fix the code and submit a pull request on github, you can refer to Ansible and Python 3 for information on how we fix common Python3 compatibility issues in the Ansible codebase.

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