Activating the Virtual Environment

I am just beginning Project 3 – Web Applications in Eric Matthes’ Python Crash Course, 2nd ed. I hit some snags to solve at the very start, first getting the directory set up in the command prompt terminal, then activating the “virtual environment” in that directory.
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Establishing the Python Path in Windows

In my quest to learn Python, I hit upon an early snag of not being able to access it in the command window / Powershell of my Windows 10 system.

I had downloaded Python 3.9.0 from; during the installation process I made sure the option to establish a “PATH” was checked. Per various sources in my internet search, this should have been enough to avoid this particular issue.

Nonetheless, post-installation, when I entered “python” after the prompt in the command window, I was informed that “python” was not recognized.

My search on the internet gave me a partial solution, which was to add a “path” in Environment Variables.
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