- timedelta
- total_seconds
- strptime
import datetime
t1 = "2013-12-29T11:23:45"
t2 = "2014-01-02T10:19:49"
dt1 = datetime.datetime.strptime(t1, '%Y-%m-%dT%H:%M:%S')
dt2 = datetime.datetime.strptime(t2, '%Y-%m-%dT%H:%M:%S')
print(dt1) # 2013-12-29 11:23:45
print(dt2) # 2014-01-02 10:19:49
diff = dt2-dt1
print(diff) # 3 days, 22:56:04
print(type(diff)) # <type 'datetime.timedelta'>
print(diff.total_seconds()) # 341764.0
time_travel = dt1-dt2
print(time_travel) # -4 days, 1:03:56
print(time_travel.total_seconds()) # -341764.0
# d = dt1+dt2
# TypeError: unsupported operand type(s) for +: 'datetime.datetime' and 'datetime.datetime'