That is a nice solution. But, how about modifying the list in place?
That is, l would become ['c', 'D']. Thanks a lot, Ray Tim Chase wrote: >> I have a list like >> e = ['a', 'b', 'e'] >> and another list like >> l = ['A', 'a', 'c', 'D', 'E'] >> I would like to remove from l all the elements that appear in e >> case-insensitive. That is, the result would be >> r = ['c', 'D'] >> >> What is a *nice* way of doing it? > > > Well, it's usually advantageous (for speed purposes) to make a > set out of your lookup data. One can then use it for a list > comprehension something like > > >>> e = ['a', 'b', 'e'] > >>> l = ['A', 'a', 'c', 'D', 'E'] > >>> s = set(e) > >>> [x for x in l if x.lower() not in s] > ['c', 'D'] > > This presumes that "e" is all lowercase letters. Otherwise, you > can force it with > > s = set(c.lower() for c in e) > > -tkc > > > > > > -- http://mail.python.org/mailman/listinfo/python-list
