Ned Deily added the comment:
Unfortunately, there are some major stability problems with IDLEs that are
linked with the Apple-supplied Tcl/Tk 8.5 in OS X 10.6. (See, for instance,
Issue9763 and Issue10537.) That includes the current python.org 2.7.1 64-bit
installer. The simplest workaround
New submission from James :
Recently installed Python 2.7.1 on my MacBook running OS X 10.6.6 and have not
been able to use IDLE without it freezing. When I force quit it doesn't show
that it's not responding. I can run scripts fine, but if I were to try to
copy-paste, or save via command-S, i