George Sakkis wrote: >>Function name is perhaps not the best one. It occurs to me that this >>is the GROUP BY in SQL so perhaps a different name is better, but >>then again this might be moot if such a already exists somewhere :) > > > Amazing, you keep reinventing things, even with the exact same name :) > > from itertools import imap,groupby > from operator import itemgetter > > for fruit,group in groupby(fruits, itemgetter(0)): > print fruit, "has a sum of", sum(imap(itemgetter(1),group)) > > For this to work as intended, fruits has to be already sorted by the > same key given to grouby; otherwise just replace fruits with > sorted(fruits, itemgetter(0)). > > By the way, read all the functions in the itertools module > (http://docs.python.org/lib/itertools-functions.html), it will save you > a lot of time. > > George >
Itertools, meh, there's that wheel again :) Didn't know about this one so thank you :) -- Lasse Vågsæther Karlsen http://usinglvkblog.blogspot.com/ mailto:[EMAIL PROTECTED] PGP KeyID: 0x2A42A1C2 -- http://mail.python.org/mailman/listinfo/python-list
