What's do list comprehensions do that generator expressions don't?

[Ville Vainio]

>>>>> "Jeremy" == Jeremy Bowers <jerf at jerf.org> writes:

    Jeremy> On Sun, 24 Apr 2005 22:59:12 -0700, Robert Kern wrote:
    >> Never. If you really need a list
    >> 
    >> list(x*x for x in xrange(10))
    >> 
    >> Sadly, we can't remove list comprehensions until 3.0.

    Jeremy> Why "remove" them? Instead, we have these things called
    Jeremy> "comprehensions" (which, now that I say that, seems a
    Jeremy> rather odd name), and you can control whether they result
    Jeremy> in a list or a generator with () or [].

Still, list comprehensions should be implemented in terms of genexps
to get rid of the LC variable that is visible outside the scope of the
LC.

    Jeremy> should be relatively simple), it's not worth breaking that
    Jeremy> code.

Well, the code that relies on the dangling variable deserves to break.

-- 
Ville Vainio   http://tinyurl.com/2prnb