Hi, Thanks for the help,
but the result is not quite right: [['a', 'b', 'g'], ['c', 'd', 'u'], ['b', 'p'], ['e', 'f', 'k']] the ['b', 'p'] is not merged. JD On Oct 17, 2:35 pm, "Chris Rebert" <[EMAIL PROTECTED]> wrote: > (Disclaimer: completely untested) > > from collections import defaultdict > > merged = defaultdict(list) > for key, val in your_list_of_pairs: > merged[key].append(val) > > result = [[key]+vals for key, vals in merged.items()] > > Cheers, > Chris > -- > Follow the path of the Iguana...http://rebertia.com > > On Fri, Oct 17, 2008 at 1:20 PM, JD <[EMAIL PROTECTED]> wrote: > > Hi, > > > I need help for a task looks very simple: > > > I got a python list like: > > > [['a', 'b'], ['c', 'd'], ['e', 'f'], ['a', 'g'], ['e', 'k'], ['c', > > 'u'], ['b', 'p']] > > > Each item in the list need to be merged. > > > For example, 'a', 'b' will be merged, 'c', 'd' will be merged. > > > Also if the node in the list share the same name, all these nodes need > > be merged. > > > For example, ['a', 'b'], ['a', 'g'] ['b', 'p'] will be merged to ['a', > > 'b', 'g', 'p'] > > > The answer should be: > > > [['a', 'b', 'g', 'p'], ['c', 'd', 'u'], ['e', 'f', 'k']] > > > Anyone has a solution? > > > Thanks, > > > JD > > -- > >http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
