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)) + Since Python favors list comprehensions over map, filter, and reduce, this would be the preferred way to do this + "Takewhile operations" occur often, at least for me + I don't think it would break any existing syntax An analogous syntax for dropwhile would be nice, but I can't think of one. This is not a PEP because it's a very simple idea and probably not just anyone (read: me) can write and submit one. If there has been a PEP for this, I've missed it; if not, it would be nice if someone wrote one. Discuss. -- http://mail.python.org/mailman/listinfo/python-list
