Hello,

Sorry if this is super basic, I am almost new with python.

So, basically I am passing an ID to a function and I need to get the record just before the one with the ID I am passing from a table.

This is my function

def get_prev_period(self,period_id):
        if period_id:
            period_list = self.pool.get('sim.periods').browse(self.cr, self.uid, period_id)
            current_id = period_list.id
            #Now I need to get the ID just above current_id
        return 0

So, basically I need to get the ID just above the current_id. I am not able to do current_id - 1 because that might no be the case.

Any tips will be much appreciated! Thanks!