[EMAIL PROTECTED] wrote: > is there is a neat way to select items from an iterable based on > predicates stored in another iterable without zipping? I can do > something like this: > > import itertools > foo = range(10) > # select even numbers > bar = map(lambda i: i%2, foo) > foobarselected = itertools.ifilterfalse(lambda t: t[0], itertools.izip > (bar,foo)) > # for simplicity I want to work with the single item list, not the > zipped one > fooselected = list(t[1] for t in foobarselected) > > However, it would be nice to have a function combining the last two > instructions. Something like > itertools.ifilterother(bar, foo) -> yield iterator with items from foo > where bar is true
I think it's a good approach to keep the number of primitives low. I find the list comprehension combined with izip() quite readable: [v for f, v in izip(bar, foo) if not f(v)] Peter -- http://mail.python.org/mailman/listinfo/python-list
