On 9/22/07, Bruce Frederiksen <[EMAIL PROTECTED]> wrote: > > I've added a new function to itertools called 'concat'. This function is > much like chain, but takes all of the iterables as a single argument. Thus > concat(some_iterables) is logically equivalent to chain(*some_iterables); > the difference being that chain(*some_iterables) results in some_iterables > being fully expanded before the call to chain, while concat(some_iterables) > only iterates on some_iterables as needed. This makes concat more > attractive when some_iterables is either expensive to expand or "infinite" > in length. > > Thus, concat(iterable) is like: > > def concat(iterables): > for it in iterables: > for element in it: > yield element > > > > I've attached an updated itertoolsmodule.c file to this email with concat > added to it. This was based on the 2.5.1 source. > > I ask that this be considered for adoption into standard python. > > Thanks in advance! >
Best thing to do is to put this up on the bug tracker (bugs.python.org) and assign it to Raymond Hettinger as itertools is his baby. -Brett _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
