base.py 文件源码

def get_expiry_date(self, **kwargs):
        """Get session the expiry date (as a datetime object).

        Optionally, this function accepts `modification` and `expiry` keyword
        arguments specifying the modification and expiry of the session.
        """
        try:
            modification = kwargs['modification']
        except KeyError:
            modification = timezone.now()
        # Same comment as in get_expiry_age
        try:
            expiry = kwargs['expiry']
        except KeyError:
            expiry = self.get('_session_expiry')

        if isinstance(expiry, datetime):
            return expiry
        if not expiry:   # Checks both None and 0 cases
            expiry = settings.SESSION_COOKIE_AGE
        return modification + timedelta(seconds=expiry)