Cutting a deck of cards

[Carlos Nepomuceno]

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> To: python-list at python.org
> From: breamoreboy at yahoo.co.uk
[...]
> See this
> http://docs.python.org/3/whatsnew/3.3.html#pep-397-python-launcher-for-windows
>
> --
> If you're using GoogleCrap™ please read this
> http://wiki.python.org/moin/GoogleGroupsPython.
>
> Mark Lawrence

Piece of cake! So, is there any risk of breaking anything if I install a new package after having both Puthon 2 and 3 installed?

How do I choose which one will run the package? Will the package handle the settings accordingly or will I need to setup manually?