用另一个字典的值替换嵌套字典的键（其中两个dict的键相等），键的值可以是dict的列表

Question

dict1 = {"key1":{"key3":"value1","key2":"value2","key4":{"key5":"value3","key6":{"key7":"value4","key8":{"key9":"value5","key10":"value6","key55":"value7"}},"key11":{"key12":"value8","key13":"value9"},"key14":[{"key15":"value10","key16":"value11","key17":"value12"},{"key15":"value13","key16":"value14","key17":"value15"}]}}}

dict2 = {"key1":"ab","key2":"bc","key3":"cd","key4":"de","key5":"ef","key6":"fg","key7":"gh","key8":"hi","key9":"ij","key10":"jk","key55":"kl","key11":"lm","key12":"mn","key13":"no","key14":"op","key15":"pq","key16":"qr","key17":"qs"}

def walk(dict1, dict2):
    output = {}
    for key, value in dict1.iteritems():

        if isinstance(value, dict):
            output[dict2[key]] = walk(value, dict2)
        elif isinstance(value, list):
            output[dict2[key]] = walk_list(value, dict2)
        else:
            output[dict2[key]] = value
    return output

def walk_list(sublist, dict2):
    output = []
    for i in sublist:

        if isinstance(i, dict):
            output = walk(i, dict2)
        elif isinstance(value, list):
            output = walk_list(i, dict2)
        else:
            output.append((key, value))
    return output

output = walk(dict1, dict2)
output = json.dumps(output)
print output

 {"ab": {"de": {"lm": {"mn": "value8", "no": "value9"}, "ef": "value3", "fg": {"hi": {"ij": "value5", "jk": "value6", "kl": "value7"}, "gh": "value4"}, "op": {"pq": "value13", "qs": "value15", "qr": "value14"}}, "bc": "value2", "cd": "value1"}}

预期产出为

 {"ab":{"cd":"value1","bc":"value2","de":{"ef":"value3","fg":{"gh":"value4","hi":{"ij":"value5","jk":"value6","kl":"value7"}},"lm":{"mn":"value8","no":"value9"},"op":[{"pq":"value10","qr":"value11","qs":"value12"},{"pq":"value13","qr":"value14","qs":"value15"}]}}}

请修复我的代码。

Answer 1

非常简单的解决方案，很早就执行递归步骤，因此具有非常简单的逻辑：

def translateKeys (obj, keyNames):
    if isinstance(obj, dict):
        return {keyNames.get(k, k): translateKeys(v, keyNames) for k, v in obj.items()}
    elif isinstance(obj, list):
        return [translateKeys(v, keyNames) for v in obj]
    else:
        return obj

它不是期望某个类型，而是接受任何东西（字典、列表或其他任何东西），并处理它的项，为每个值调用它自己。这避免了必须遍历obj本身并检查循环中每个项的值。

用于示例数据：

>>> dict1 = {"key1":{"key3":"value1","key2":"value2","key4":{"key5":"value3","key6":{"key7":"value4","key8":{"key9":"value5","key10":"value6","key55":"value7"}},"key11":{"key12":"value8","key13":"value9"},"key14":[{"key15":"value10","key16":"value11","key17":"value12"},{"key15":"value13","key16":"value14","key17":"value15"}]}}}
>>> dict2 = {"key1":"ab","key2":"bc","key3":"cd","key4":"de","key5":"ef","key6":"fg","key7":"gh","key8":"hi","key9":"ij","key10":"jk","key55":"kl","key11":"lm","key12":"mn","key13":"no","key14":"op","key15":"pq","key16":"qr","key17":"qs"}
>>> expected =  {"ab":{"cd":"value1","bc":"value2","de":{"ef":"value3","fg":{"gh":"value4","hi":{"ij":"value5","jk":"value6","kl":"value7"}},"lm":{"mn":"value8","no":"value9"},"op":[{"pq":"value10","qr":"value11","qs":"value12"},{"pq":"value13","qr":"value14","qs":"value15"}]}}}
>>> result = translateKeys(dict1, dict2)
>>> result
{'ab': {'de': {'fg': {'gh': 'value4', 'hi': {'ij': 'value5', 'jk': 'value6', 'kl': 'value7'}}, 'op': [{'qr': 'value11', 'pq': 'value10', 'qs': 'value12'}, {'qr': 'value14', 'pq': 'value13', 'qs': 'value15'}], 'ef': 'value3', 'lm': {'no': 'value9', 'mn': 'value8'}}, 'cd': 'value1', 'bc': 'value2'}}
>>> result == expected
True

>>> result = translateKeys(dict1, dict2)
>>> invertedKeyNames = {v: k for k, v in dict2.items()}
>>> original = translateKeys(result, invertedKeyNames)
>>> original == dict1
True