how to calc the difference between two datetimes?

[Stewart Midwinter]

After an hour of research, I'm more confused than ever. I don't know
if I should use the time module, or the eGenix datetime module. Here's
what I want to do:  I want to calculate the time difference (in
seconds would be okay, or minutes), between two date-time strings.

so: something like this:
time0 = "2005-05-06 23:03:44"
time1 = "2005-05-07 03:03:44"

timedelta = someFunction(time0,time1)
print 'time difference is %s seconds' % timedelta.

Which function should I use?

confusedly yours,
-- 
Stewart Midwinter
stewart at midwinter.ca
stewart.midwinter at gmail.com
Skype: midtoad