On Wed, Sep 23, 2015 at 8:42 AM, Larry Martell <larry.mart...@gmail.com> wrote: > I currently have 3 lists of lists and I sort them based on a common > field into a single list like this: > > def GetObjKey(a): > return a[2] > > sorted(a + b + c, key=GetObjKey) > > Which works just fine. > > But now, I need to have just the first list (a) also sub sorted by > another field and I can't quite figure out how to do this.
Have you tried simply sorting a by the other field prior to doing your merge-and-sort? The Python list.sort() method is guaranteed to be stable. I can't find a comparable guarantee for sorted(), but worst case, you should be able to do your list merge, and then explicitly name it and sort it. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
