title: Windows how does the "Path" environment variable work?
body: <p>I recently added python to my environment variables when this question popped into my head. When I type "python" into command prompt, windows seems to know which file to run. However, I added python into this environment variable called "Path", and never specified "python" anywhere.
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  I don't understand how windows knows what I want when I type "python". Could someone help clear this up?</p>