[Python-Dev] [UPDATE] PEP 274, Dict Comprehensions

[Guido van Rossum]

> +1 generally on dict comprehensions, but:
> 
> > >>> print {1 for x in list_of_email_addrs}
> >      {'barry@zope.com'   : 1, 'barry@python.org' : 1, 'guido@python.org' : 1}
> 
> -1 on this bit. It's not at all clear what it should mean,
> and the saving over writing it out explicitly, i.e.
> 
>   {x:1 for x in list_of_email_addrs}
> 
> is vanishingly small.

You're getting better at channeling me. :-)

--Guido van Rossum (home page: http://www.python.org/~guido/)