"Add Python 3.xxx to PATH"

Thomas Workman <[email protected]> Thu, 8 Aug 2019 22:24:08 -0400
Newsgroups gmane.comp.mozilla.devel.layout
Message-ID <CAMDa7usqqkcAMROnZFzEXk5qyuMvs6uxrhh-vfmAkPkba_71XQ@mail.gmail.com>
Pardon my ignorance,
I have Python 3.7 64bit installed and  I wish to  set up a simple local
testing server on my Windows 10 machine.
Since Python is already installed, how  can I  set the PATH