[Pythonmac-SIG] py2app question

[Stewart Midwinter]

I have an application I'd like to have located on a USB stick, and be
able to run in a self-contained manner on any PC it's connected to,
whether running OS X or Windows.   Can I use py2app to help create
this stand-alone distribution?

Or, could I count on Python always being installed on any OS X -
equipped PC, and thus not need to install a separate copy on my USB
stick in order to be able to run my app?

thanks
S