human
Solve the following python programming problem given the following code:
@ property 
def tags(self) : 
    def _filter_rules(tags) : 
        return [tag for tag in tags if (not isinstance (tag, InfernoRule))] 
if (self.settings.get ('source_tags') is not None) : 
        tags = _filter_rules (self.settings.get ('source_tags')) 
else : 
        tags = _filter_rules (self.rule.source_tags) 
        count = None 
        if (self.settings.get ('day_start') is not None) : 
            start = self.settings.get ('day_start') 
            count = 1 
else : 
            if (self.rule.day_start is not None) : 
                start = self.rule.day_start 
else : 
                start = date.today () 
if (self.settings.get ('day_offset') is not None) : 
            start += timedelta (days = (- self.settings.get ('day_offset'))) 
            count = 1 
else : 
            start += timedelta (days = (- count.rule.day_offset)) 
if (self.settings.get ('day_range') is not None) : 
            count = self.settings.get ('day_range') 
else : 
            if (count is None) : 
                count = self.rule.day_range 
if (count and tags) : 
            tags = [self._name (tag, day, start) for tag in tags for day in range (count)] 
return (tags or []) 

    
    

    Fix the buggy line: start += timedelta (days = (- count.rule.day_offset))
assistant
#Here is Python code to fix the buggy line: start += timedelta (days = (- count.

start += timedelta (days = (- self.rule.day_offset))