PyTan is actively maintained on GitHub, where the code is always available.
Make sure you have installed a supported version of Python.
Installing PyTan via pip or pipenv will automatically install all of the necessary dependencies.
$ pipenv install pytan3
Read more about pipenv
$ git clone git://github.com/tanium/pytan3.git
Get the master branch which will always be the most recent stable release, or download a specific version from the releases page.
Todo
It is planned to create a batteries included distribution of PyTan for Windows that will include Python 3.7.x as well as PyTan and all of its dependencies.
Planned for version: 3.2.0