injecting "set" into 2.3's builtins?

[Skip Montanaro]

    >> I have:
    >> try:
    >>     set
    >> except NameError:
    >>     from sets import Set as set
    >> in my code in a few places.

    Sion> Is there any reason to prefer this over the idiom I have:

    Sion> if sys.version_info < (2, 4):
    Sion>     from sets import Set as set

No, actually, in my mind all this stuff is ugly.  I'd rather just inject
"set" into builtins using sitecustomize as long as it's unlikely to cause
problems.

Skip