Lambda going out of fashion

[Skip Montanaro]

    Mike> Perl 6.0 is going to include even more drastic changes. It will
    Mike> also include a Perl 5.x interpreter, and will have to be switched
    Mike> to 6.0 mode by a magic cookie of some kind in the source. Possibly
    Mike> Python 3.0 could do something similar. 

-1

Things are complex enough as it is.  Maintaining two interpreters that have
to somehow comingle would be worse.  Maintain Python 2.x as a separate
release for a period of time after Python 3.0 is released (a couple years,
anyway, maybe longer), but don't mix the two.

Skip