dgw_data.py 文件源码

def checkRequirement(self, rule):
        # unusable rules 
        if not rule or type(rule) != element.Tag or rule['ruletype'] not in allowed_rule_type or rule['per_complete'] in disallowed_per_complete:
            return 10000  # return a impossible number

        if rule.requirement and rule.requirement.has_attr('numgroups'):
            n = int(rule.requirement['numgroups'])
            shortlist = list()
            for child_rule in rule.find_all('rule'):
                # in case there are multiple subrules
                if child_rule.has_attr('per_complete') and child_rule.get('per_complete') not in disallowed_per_complete \
                and child_rule['ruletype'] in allowed_rule_type:
                    shortlist.append(self.checkRequirement(child_rule))
            # sort the list and choose the first n (smallest) subrules
            return sum(sorted(shortlist)[:n])
        else:
            return int(rule.requirement['classes_begin']) - int(rule.classes_applied.text)