I'm using Python and I need to add a variable which has seconds in it to a datetime variable.

The variable which has the seconds stored and the date to which it should be added looks like this. But I couldn't get it correct as timedelta has only upto days.

sec_var = 1.83920792079208E+04
print st_ti
2013-01-01 00:00:00

Note: The sec_var can go upto 10(pow)12 which means I need to take care till years.

So basically I need the seconds value to get added to the date variable.

How do I solve this?