Improve Windows commands in tutorial (GH-14379)

Doc/tutorial/interpreter.rst

@@ -23,12 +23,10 @@ is an installation option, other places are possible; check with your local
 Python guru or system administrator.  (E.g., :file:`/usr/local/python` is a
 popular alternative location.)
 
-On Windows machines, the Python installation is usually placed in
-:file:`C:\\Python38`, though you can change this when you're running the
-installer.  To add this directory to your path,  you can type the following
-command into :ref:`a command prompt window <faq-run-program-under-windows>`::
-
-   set path=%path%;C:\python38
+On Windows machines where you have installed from the :ref:`Microsoft Store
+<windows-store>`, the :file:`python3.9` command will be available. If you have
+the :ref:`py.exe launcher <launcher>` installed, you can use the :file:`py`
+command. See :ref:`setting-envvars` for other ways to launch Python.
 
 Typing an end-of-file character (:kbd:`Control-D` on Unix, :kbd:`Control-Z` on
 Windows) at the primary prompt causes the interpreter to exit with a zero exit

Doc/using/windows.rst

@@ -214,13 +214,13 @@ of available options is shown below.
 For example, to silently install a default, system-wide Python installation,
 you could use the following command (from an elevated command prompt)::
 
-    python-3.8.0.exe /quiet InstallAllUsers=1 PrependPath=1 Include_test=0
+    python-3.9.0.exe /quiet InstallAllUsers=1 PrependPath=1 Include_test=0
 
 To allow users to easily install a personal copy of Python without the test
 suite, you could provide a shortcut with the following command. This will
 display a simplified initial page and disallow customization::
 
-    python-3.8.0.exe InstallAllUsers=0 Include_launcher=0 Include_test=0
+    python-3.9.0.exe InstallAllUsers=0 Include_launcher=0 Include_test=0
         SimpleInstall=1 SimpleInstallDescription="Just for me, no test suite."
 
 (Note that omitting the launcher also omits file associations, and is only
@@ -257,13 +257,13 @@ where a large number of installations are going to be performed it is very
 useful to have a locally cached copy.
 
 Execute the following command from Command Prompt to download all possible
-required files.  Remember to substitute ``python-3.8.0.exe`` for the actual
+required files.  Remember to substitute ``python-3.9.0.exe`` for the actual
 name of your installer, and to create layouts in their own directories to
 avoid collisions between files with the same name.
 
 ::
 
-    python-3.8.0.exe /layout [optional target directory]
+    python-3.9.0.exe /layout [optional target directory]
 
 You may also specify the ``/quiet`` option to hide the progress display.
 
@@ -530,7 +530,7 @@ To temporarily set environment variables, open Command Prompt and use the
 
 .. code-block:: doscon
 
-    C:\>set PATH=C:\Program Files\Python 3.8;%PATH%
+    C:\>set PATH=C:\Program Files\Python 3.9;%PATH%
     C:\>set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
     C:\>python
 
@@ -603,7 +603,7 @@ of your Python installation, delimited by a semicolon from other entries.  An
 example variable could look like this (assuming the first two entries already
 existed)::
 
-    C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Python 3.8
+    C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Python 3.9
 
 .. _launcher: