On Fri, Jun 11, 2010 at 9:31 PM, Vincent Davis <vinc...@vincentdavis.net> wrote: > Starting with an example. > In [23]: x = [1,2,3,4,4,4,5,5,3,2,2,] > In [24]: y = set(x) > In [25]: y > Out[25]: set([1, 2, 3, 4, 5]) > In [26]: y2 = len(set(x)) > In [27]: y2 > Out[27]: 5 > > How would I do the above "y2 = len(set(x))" but have len(set()) in a > dictionary. I know how to do .. > In [30]: d = dict(s=set) > In [32]: d['s'](x) > Out[32]: set([1, 2, 3, 4, 5]) > > but not sure how to add the len() and thought maybe the answer in a > lambda function. > I know I could def a function but would prefer to keep it all on one line.
>>> d = dict(s=lambda x: len(set(x))) >>> d['s'](x) 5 Cheers, Ian -- http://mail.python.org/mailman/listinfo/python-list