On Sat, Dec 12, 2009 at 9:01 PM, Ned Deily <n...@acm.org> wrote: > In article > <ec96e1390912121653w56c3dbe3p859a7b979026b...@mail.gmail.com>, > Benjamin Kaplan <benjamin.kap...@case.edu> wrote: >> On Sat, Dec 12, 2009 at 7:15 PM, Tom Machinski <tom.machin...@gmail.com> >> wrote: >> > In most cases, `list(generator)` works as expected. Thus, >> > `list(<generator expression>)` is generally equivalent to `[<generator >> > expression>]`. >> Actually, it's list(generator) vs. a list comprehension. I agree that >> it can be confusing, but Python considers them to be two different >> constructs. >> >> >>> list(xrange(10)) >> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >> >>> [xrange(10)] >> [xrange(10)] > > That's not a list comprehension, that's a list with one element. > >>>> [x for x in xrange(10)] > [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] > > <CrocodileDundee> Now *that's* a list comprehension. </CrocodileDundee> >
I know. But the OP was wondering why list(<generator expression>) was behaving differently than [<generator-expression>] and I was pointing out that list comprehensions are considered their own syntax- the list comprehension [x for x in xrange(10)] is different than [(x for x in xrange(10)]. > -- > Ned Deily, > ...@acm.org > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
