datetime module: iso date *input* needed

[george young]

[python 2.3a1, linux]
I'm using the 2.3a datetime module.  The datetime.isoformat() works nicely:
  >>> import datetime
  >>> d=datetime.datetime.now()
  >>> d
  datetime.datetime(2003, 1, 30, 17, 48, 7, 848769)
  >> d.isoformat()
  '2003-01-30T17:48:07.848769'

but now I need a way to make a datetime object from a date in iso format.
I can't find a function in datetime to do this, e.g. something like:
  d=datetime.datetime.parse_iso('2003-01-30T17:48:07.848769')

I thought about using the time module strptime function, but it doesn't do
fractions of a second.  I used to move date/times between python and postgres as
epoch integers, but I hope to change to a human-readable format for better
debugging.  

I'm sure I could do this somehow with mx.DateTime, but if the datetime module
is going to be the new standard, I would like to use it in my new code...

-- George
-- 
 I cannot think why the whole bed of the ocean is
 not one solid mass of oysters, so prolific they seem. Ah,
 I am wandering! Strange how the brain controls the brain!
	-- Sherlock Holmes in "The Dying Detective"