[BangPypers] date/time difference between two dates

[Anand Chitipothu]

> Not just these functions, but almost the entire time/datetime
> functions mimic their C counterparts.

I always find datetime module very painful to deal with.
May be it is because it has borrowed too much from C instead of being pythonic.

Just give one example:

>>> import datetime
>>> t = datetime.datetime.utcnow().isoformat()
>>> t
'2009-02-19T11:26:28.750579'

Is there any easy way to convert this iso-formatted date string back
to datetime?