Nothing on OSX is ever named .exe.
On OSX building and installing Python with "configure
--enable-framework" installs an executable just called 'python'
in /Library/Frameworks/Python.framework/Versions/3.1/bin (using 3.1 as
an example). It also creates double-clickable applications whose real
name is Python.app and IDLE.app. Whether to see the .app
extensions on "packages" that are applications is a Finder
preference, so most users won't see the .app.
If the build was configured without frameworks, then an
executable named in the Unix style -- just python -- is installed in
/usr/local/bin (by default) or wherever else was specified with the
configure --prefix option.
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