[Tutor] cookie expiration date format

[Tim Johnson]

Hi:
I want to be able to expire a cookie programmatically.
In other languages, I just set the expiration date to 'yesterday'.
If I look at the documentation at:
http://docs.python.org/lib/node644.html
for the Cookie object, I see the following:
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expires
    Integer expiry date in seconds since epoch,
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I'm not clear what datatype is needed here.
Can anyone clarify this for me?
Thanks
Tim
-- 
Tim Johnson <tim at johnsons-web.com>
Palmer, Alaska, USA