python 获取两个dict的差异

参考文档： https://stackoverflow.com/questions/1165352/calculate-difference-in-keys-contained-in-two-python-dictionaries

 

 

class DiffDict(object):

    """获取两个dict的差异"""

    def __init__(self, current, last):

        self.current = current

        self.last = last

        self.set_current = set(current)

        self.set_last = set(last)

        self.intersect_keys = self.set_current & self.set_last

    def get_added(self):

        """current - 交集 = 新增的key"""

        added_keys = self.set_current - self.intersect_keys

        return [{'key': key, 'value': self.current.get(key)} for key in added_keys]

    def get_removed(self):

        """last - 交集 = 减去的key"""

        removed_keys = self.set_last - self.intersect_keys

        return [{'key': key, 'value': self.current.get(key)} for key in removed_keys]

    def get_changed(self):

        """用交集中的key去两个dict中找出值不相等的"""

        changed_keys = set(o for o in self.intersect_keys if self.current.get(o) != self.last.get(o))

        return [{

            'key': key,

            'value': '%s -> %s' % (self.last.get(key), self.current.get(key))

        } for key in changed_keys]

转载于:https://www.cnblogs.com/jessicaDuan/p/9896192.html