Typing any command that requires to launch Python sends me to the Python Installation Help site

[KB-Master]

Bug report

Bug description:

I write py, python and they both just send me to Python Installation Help site

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

[aisk]

Hi, how did you install Python? Please review https://docs.python.org/dev/using/windows.html#pymanager-troubleshoot, particularly the troubleshooting section, and perform the recommended steps.