Effective 2017-11-20, PowerShell is now the default command shell on Windows 10, and possibly other versions.  Command Prompt (cmd.exe) is still present, just no longer the default.

https://support.microsoft.com/en-us/help/4027690/windows-powershell-is-replacing-command-prompt

Current instructions for installing and configuring Python on Windows reference only Command Prompt.  There may be other places.

https://docs.python.org/3/using/windows.html#configuring-python

FYI, we're in the process of updating our documentation for Pyramid where we have both PowerShell and Command Prompt.  At some point in the future, we may drop the latter.

https://github.com/Pylons/pyramid/issues/3260

Let me know what y'all think is the best way to proceed, even if that is no action.