En Wed, 26 Mar 2008 20:47:45 -0300, barronmo <[EMAIL PROTECTED]> escribió:
> I'm trying to get the difference in dates using the time module rather
> than datetime because I need to use strptime() to convert a date and
> then find out how many weeks and days until that date. I'm a beginner
> so any help would be appreciated. Here is the code:
>
> def OBweeks(ptID):
> qry = 'SELECT short_des FROM problems WHERE patient_ID = %s;' %
> (ptID)
> results = EMR_utilities.getAllData(qry)
> for items in results:
> r = re.search('\d\d\d\d-\d\d-\d\d', items)
> if r:
> d = time.strptime(r.group(), "%Y-%m-%d') -
> time.localtime()
> weeks, days = divmod(d.days, 7)
> return '%s %s/7 weeks' % (weeks, days)
>
> This isn't working. I'm getting "unsupported operand type for -:
> 'time.struct_time' and 'time.struct_time" error.
I don't see why you don't want to use datetime; it's the easiest way to
compute the time difference.
To obtain the date object dt from the database, you might use the
following, based on your posted code:
import datetime
match = re.search('(\d\d\d\d)-(\d\d)-(\d\d)', items)
if match:
y, m, d = (int(x) for x in match.groups())
dt = datetime.date(y, m, d)
Then, weeks and days are easily computed (similar to your own code):
now = datetime.date.today() # evaluate once outside the loop
delta = now - dt
weeks, days = divmod(delta.days, 7)
--
Gabriel Genellina
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