On Sat, Feb 02, 2008 at 11:16:16AM +0900, Stephen J. Turnbull wrote: > Greg Ewing writes: > > > Also, if generator expressions had come first, we > > would probably never have gotten list comprehensions. > > I don't understand. A list comprehension is for when you know you're > going to want to work with the whole list. Similarly (even more so) > for dictionary comprehensions. List comprehension can be defined in > terms of a genexp, of course, but ISTM it's a worthwhile addition to > the language in its own right.
I think Greg was just pointing out that with generator expressions, you can write: >>> lst = list(x**2 for x in xrange(10)) >>> which would make it less necessary to the equivalent syntax: >>> lst = [x**2 for x in xrange(10)] >>> -- Andrew McNabb http://www.mcnabbs.org/andrew/ PGP Fingerprint: 8A17 B57C 6879 1863 DE55 8012 AB4D 6098 8826 6868
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