All things must come to an end. In the case of Ansible’s support for managing hosts whose Python version is 2.4 or 2.5, that ending is within sight. Our plan is for the next 2.x release of Ansible after March of 2017 to require Python-2.6 or greater on the managed machines; dropping support for Python-2.4 and Python-2.5. Bugfixes for the previous release which are still supported will continue to keep compatibility with Python-2.4 in the modules but users should be planning how to transition any of their machines that are still on Python-2.4 to either a new version of their OS/distribution or on how they can install and support a newer version of Python on their older machines.
Thanks,
-Toshio Kuratomi