On Fri, 25 Mar 2005 08:46:12 -0800, Michael Spencer <[EMAIL PROTECTED]> wrote:
>Tim Hochberg wrote: >> Jordan Rastrick wrote: >> > >itertools.groupby enables you to do this, you just need to define a suitable >grouping function, that stores its state: > >For example, if short lines should be appended to the previous line: > >from itertools import groupby >linesource = """\ >Here is a long line, long line, long line >and this is short >and this is short >Here is a long line, long line, long line >and this is short""".splitlines() > >def record(item, seq = [0]): > if len(item) > 20: > seq[0] +=1 > return seq[0] > > > >>> for groupnum, lines in groupby(linesource, record): > ... print "".join(lines) > ... > Here is a long line, long line, long lineand this is shortand this is short > Here is a long line, long line, long lineand this is short > >>> Nice, but I think "record" is a bit opaque semantically. How about group_id or generate_incrementing_unique_id_for_each_group_to_group_by or such? Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
