給定 a uuid，我想查找并返回包含和與之關聯(lián)的數(shù)據(jù)的字典。uuid我寫了一個測試來描述預期的結果。def test_search_for_cat(): cat_id = "a2c23d62-9d06-44f4-92dc-b28875173a54" cat_data = { "senior-developer": { "name": "senior-developer", "displayName": "Senior Developer", "uuid": "418714f8-b3bd-4ba5-b4a7-4f87717419f4", "mid-level-developer": { "name": "mid-level-developer", "displayName": "Mid-level Developer", "uuid": "a2c23d62-9d06-44f4-92dc-b28875173a54", }, } } retreived_cat = search_for_cat(cat_id, cat_data) assert retreived_cat == { "name": "mid-level-developer", "displayName": "Mid-level Developer", "uuid": "a2c23d62-9d06-44f4-92dc-b28875173a54", }我已經(jīng)開始編寫一個函數(shù)來搜索正確的類別。def search_for_cat(cat_id, cat_data): if isinstance(cat_data, dict): for slug, data in cat_data.items(): if data["uuid"] == cat_id: return data但我在遞歸部分苦苦掙扎。當uuid與給定的不匹配時cat_id，如何找到帶有 dict 的鍵以傳遞給遞歸函數(shù)？
3 回答
SMILET
TA貢獻1796條經(jīng)驗 獲得超4個贊
你可以試試這個。如果對象是dictisinstance(object,dict)則返回。我們必須找到作為值映射到鍵的字典。首先使用 . 檢查給定字典是否具有as 值。如果不是，則遍歷值，如果該值是字典，則再次重復上述過程。如果存在，則返回我們正在迭代的當前字典。Truecat_idcat_iddict.values()cat_id
In [90]: cat_data
Out[90]:
{'senior-developer': {'name': 'senior-developer',
'displayName': 'Senior Developer',
'uuid': '418714f8-b3bd-4ba5-b4a7-4f87717419f4',
'mid-level-developer': {'name': 'mid-level-developer',
'displayName': 'Mid-level Developer',
'uuid': 'a2c23d62-9d06-44f4-92dc-b28875173a54'}}}
In [91]: cat_id = "a2c23d62-9d06-44f4-92dc-b28875173a54"
In [94]: def recur(_dict,val):
...: if val in _dict.values():
...: return _dict
...: else:
...: for v in _dict.values():
...: if isinstance(v,dict):
...: return recur(v,val)
In [95]: recur(cat_data,cat_id)
Out[95]:
{'name': 'mid-level-developer',
'displayName': 'Mid-level Developer',
'uuid': 'a2c23d62-9d06-44f4-92dc-b28875173a54'}
In [96]: retrived_cat=recur(cat_data,cat_id)
In [97]: retrived_cat
Out[97]:
{'name': 'mid-level-developer',
'displayName': 'Mid-level Developer',
'uuid': 'a2c23d62-9d06-44f4-92dc-b28875173a54'}
蕪湖不蕪
TA貢獻1796條經(jīng)驗 獲得超7個贊
isinstance(myObject,dict).
例如：
isinstance({},dict)返回真，而
isinstance([],dict)
返回 False
拉丁的傳說
TA貢獻1789條經(jīng)驗 獲得超8個贊
if is_instance(slug, _dict): search_for_cat_id(cat_id, _dict[slug])
只需在 return 語句下面添加這個
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