In the docs and examples that I have seen so far, it is suggested that the groupby() input list may be pre-sorted with the same function that is passed to groupby as a key extractor.
I tried doing this with a simple example, but noticed that [].sort(func) passes two arguments to func, whereas the function expected by groupby() uses only one argument. It would seem that two differently written functions would have to be created which operate on the data in conceptually similar but practically different ways in order to presort the input list so that semantically similar items all make it into the same group. Thanks, Toby -- Posted via a free Usenet account from http://www.teranews.com -- http://mail.python.org/mailman/listinfo/python-list
