I ended up implementing my own sched.py equivalent as I needed kwargs support. This is my attempt to improve the stdlib, so I can throw my module way ;-)

Added kwargs support, and made "argument" optional. "argument" is still named argument, I would like to rename this args but I'm unclear on the backwards compat rules for stdlib, in theory it should be fine unless someone has code that treats argument as a keyword arg).

The scheduler init no long requires timer functions to be provided, it defaults to time.time, time.sleep as a helper to reduce repeated code for callers. This still allows callers to provide custom timer routines.

I added a few (non exhaustive) tests for the new additions.

It looks like there are a few pep8 improvements could be made to sched.py but I've not done that to reduce diffs and make it easier to see what I changed. Similar doc strings could be made more clear.

I snuck in a hack to the test so that the full test suite isn't needed, I do not expect that to be accepted :-) I don't have enough network bandwidth to pull the whole hg repo so I ended up pulling the tip version for 2.7 of sched and its test (as of 2011-10-22 this is 5110d723fbb1)

Hi, thanks for the patch!
2.7 receives only bug fixes, so your patch can't be applied to 2.7.
If the feature is accepted it can go to 3.3 though.

I think this should go in.
I'm going to provide a slighly modified version of the attached patch which includes document changes and get rid of some unit tests which are not really necessary in my opinion.

Updated patch in attachment.

+1 to kwargs support in sched.  I've also ended up modifying sched.py to support this in the past.

Checked in as f1a21f2e3bec and dc52db0fa2e5.
Thanks.