I've installed Python 2.7.11 and 3.5.1 onto my Windows machine. I've set both in my PATH. Interestingly, version 2.7.11 is installed on the main C:\ drive and version 3.5.1 is installed in my C:\Program Files. At first, version 3.5.1 sets its location to my User folder, but I wanted All Users to have access to this Python.
Anyhow, once set, I run in the Command Line and seems the latest version runs (i.e. 3.5.1).
Below are some basic commands.
Download Links
https://www.python.org/downloads/release/python-2711/https://www.python.org/downloads/release/python-351/
Basic Commands
Is Python installed, Find Version
$ python --versionIs PIP installed
$ pip listReferences
https://www.python.org/https://en.wikipedia.org/wiki/Pip_(package_manager)
http://stackoverflow.com/questions/4750806/how-do-i-install-pip-on-windows
http://stackoverflow.com/questions/11425106/python-pip-install-fails-invalid-command-egg-info
http://stackoverflow.com/questions/4750806/how-do-i-install-pip-on-windows
http://stackoverflow.com/questions/15031694/installing-python-packages-from-local-file-system-folder-with-pip
https://pypi.python.org/pypi/slack-cli/0.1.0