Question

Possible Duplicate:
Add timestamps in python

dates = {} 
dates.update({'2011-03-07':'16:03:01'})
dates.update({'2011-03-06':'16:03:01'})
dates.update({'2011-03-08':'16:03:01'})
dates.update({'2011-03-04':'16:03:01'})
dates.update({'2011-05-16':'16:03:01'})
dates.update({'2011-05-18':'16:03:01'})
dates.update({'2011-07-16':'16:03:01'})
dates.update({'2011-07-17':'16:03:01'})

From the above dictionary how to how to add the all the timestamps for a particular month in python2.4

Answer 1

import datetime
import re
months = {}
for date in dates:
    month = date[:7]
    time = re.match(r"(\d+):(\d+):(\d+)", dates[date])
    seconds = int(time.group(1))*3600 + int(time.group(2))*60 + int(time.group(3))
    if month in months:
        months[month] += seconds
    else:
        months[month] = seconds
for month in sorted(months.keys()):
    print "Times for " + month + ": " + str(datetime.timedelta(seconds=months[month]))

Output:

Times for 2011-03: 2 days, 16:12:04
Times for 2011-05: 1 day, 8:06:02
Times for 2011-07: 1 day, 8:06:02