Eighty wrote:
> > Duncan Booth wrote: >> Eighty wrote: >> >> > I suggest a new extension of the list comprehension syntax: >> > >> > [x for x in xs while cond(x)] >> > >> > which would be equivalent to >> > >> > list(itertools.takewhile(cond, xs)) >> > >> >> What would this syntax offer that: >> >> [x for x in takewhile(cond, xs)] >> >> doesn't currently offer? (Apart, that is, from saving you 3 >> characters of typing) > > The same thing that [f(x) for x in xs] offers that map(f, xs) doesn't, > and the same thing that [x for x in xs if f(x)] offers that filter(f, > xs) doesn't. It's more "pythonic". You can use an expression for cond > instead of a lambda. > > No, the list comprehension lets you write an expression directly avoiding a function call, and it also allows you to add in a condition which can be used to filer the sequence. Your proposal adds nothing. -- http://mail.python.org/mailman/listinfo/python-list
