On 12/30/2014 3:31 PM, Liam Marsh wrote:

/the pep 397 says that any python script is able to choose the language
version which will run it, between all  the versions installed on the
computer, using on windows a launcher in the "C:\windows" folder./

can the idle version be chosen like this too, or can the idle "run"
command do it?

Question about using python, including Idle, should be directed to python-list. Quick answers to what seem to be separate questions.

1. At the command line, one select the version of a module to run by selecting the version of python to run.  Idle is no different from any other module intended to be directly run.  For me,

C:\Users\Terry>py -2 -m idlelib.idle  # starts Idle in 2.7.9

C:\Users\Terry>py -3 -m idlelib  # starts Idle in 3.4.2

On Windows, I pin the Start -> Pythonx.y -> Idle x.y icons to my task bar so I can select either python + idle combination with a mouse click.

2. Selecting F5 or Run-module in an Idle editor runs the editor buffer contents with the same version of python as is running Idle.  I have considered adding 'Run with x.y' options according to what is installed, but that is pie-in-the-sky at the moment.

--
Terry Jan Reedy

_______________________________________________
Python-ideas mailing list
Python-ideas@python.org
https://mail.python.org/mailman/listinfo/python-ideas
Code of Conduct: http://python.org/psf/codeofconduct/