You can always do:
ACCOUNT_ACTIVATION_DAYS = 2./24 #(2 hours, or 0.0833)
The reason this would work is, from the source code
expiration_date = datetime.timedelta(days=settings.ACCOUNT_ACTIVATION_DAYS)
and 2./24
in
datetime.timedelta(days=settings.ACCOUNT_ACTIVATION_DAYS)
is perfectly valid.
Example:
>>> datetime.datetime.now()
datetime.datetime(2014, 3, 25, 14, 3, 40, 137723)
>>> datetime.datetime.now() + datetime.timedelta(days=2./24)
datetime.datetime(2014, 3, 25, 16, 3, 53, 521675)
>>>