Re: installing 3.10.9 to run old scripts on windows 11

On 3/28/2026 12:13 AM, Mark Mattson via Python-list wrote:
>   Hello python,  I downloaded some python scripts pymovie and pyote from
> iota and followed instructions to get the older version of python to run on
> my windows 11 machine.  If I run python from cmd line it jumps to a store
> window for python installation.  If I hit start and run python from there
> it opens >>>
> but when I try to run the bat file for my programs the error say python not
> found.  There are many python exe files on computer now and I put many
> paths into the env see below. but it stii can't find python to run. Can you
> help?
> thanks Mark

You should have the "py" launcher on your computer. It is likely to have 
been installed already. You can launch any installed version of Python 
and also set the default one. To see which Python versions are 
available, run

py -0

To run a Python program "your_program.py" with the default version, run

py your_program.py

To run it with Python 3.10 (if installed, of course), run

py -3.10 your_program.py

It would be a good idea to remove all those Python-related path segments 
from your path if they don't point to the version you normally want to 
run.  Also run the pip installer as a module:

py -m pip ....

This make sure that the right version of pip is run for the Python 
executable that is in use.

If you don't have the "py" launcher installed you can get it from either 
python.org or the Windows Store.