"Richard D. Moores" <rdmoo...@gmail.com> wrote

Or the way I do it, have python31.bat and python26.bat, which launch the
exact pythons that I want.

Thanks, Dave. I'm not familiar with .bat files. Could you give me a
look at one of them?

A bat file is just a file of "DOS" commands and ends in .bat

so python31.bat

will contain the single line

C:\path\ro\python\31\python.exe %*



The %* is a placeholder for any commandline arguments you give
when calling the batch file -  like sys.argv in python.

You then call it with

python31 myscript.py


There is a brief discussion and example of a bat file in the intro
to my tutor, in the What is Programming topic.

HTH,

--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/



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