从 DeepDiff 结果构造 python 字典

Question

我有一个 DeepDiff 结果，它是通过比较两个 JSON 文件获得的。我必须从 deepdiff 结果构造一个 python 字典，如下所示。

json1 = {"spark": {"ttl":3, "poll":34}}
json2 = {"spark": {"ttl":3, "poll":34, "toll":23}, "cion": 34}

deepdiffresult = {'dictionary_item_added': {"root['spark']['toll']", "root['cion']"}}

expecteddict = {"spark" : {"toll":23}, "cion":34}

如何实现这一目标？

Answer 1

可能有更好的方法来做到这一点。 但是您可以解析返回的字符串并将一个新字典与您想要的结果链接在一起。

json1 = {"spark": {"ttl":3, "poll":34}}
json2 = {"spark": {"ttl":3, "poll":34, "toll":23}, "cion": 34}
deepdiffresult = {'dictionary_item_added': {"root['spark']['toll']", "root['cion']"}}
added = deepdiffresult['dictionary_item_added']

def convert(s, j):
    s = s.replace('root','')
    s = s.replace('[','')
    s = s.replace("'",'')
    keys = s.split(']')[:-1]
    d = {}
    for k in reversed(keys):
        if not d:
            d[k] = None
        else:
            d = {k: d}
    v = None
    v_ref = d
    for i, k in enumerate(keys, 1):
        if not v:
            v = j.get(k)
        else:
            v = v.get(k)
        if i<len(keys):
            v_ref = v_ref.get(k)
    v_ref[k] = v
    return d

added_dict = {}
for added_str in added:
    added_dict.update(convert(added_str, json2))

added_dict
#returns:
{'cion': 34, 'spark': {'toll': 23}}

Answer 2

简单的回答， 在 python 中，有一个名为 Dictdiffer 的内置函数。你能试试这个吗？

$ pip install dictdiffer

示例：

from dictdiffer import diff
result = diff(json1, json2)
print result == {"spark" : {"toll":23}, "cion":34}

参考资料： 词典差异