搜索特定值的嵌套字典列表[重复]答案

【问题标题】：Search list of nested dicts for specific value [duplicate]搜索特定值的嵌套字典列表[重复]
【发布时间】：2020-11-27 00:32:40
【问题描述】：

我有一个嵌套字典列表，并且想找到包含某个值的字典，然后使用该字典查找字典中其他键的值。例如，我想在列表中搜索 MP_REFERENCE '123456'，以便保存包含此字符串的 dict 并在其中查找其他值（例如 my_dict["OUTCOME_CODE"]["value"]）

【问题讨论】：

重复Python list of dictionaries search

标签： python list dictionary nested

【解决方案1】：

这里有一些代码遍历“LIST”并将带有您要求的规范的dict保存到一个名为correct_dict的变量中。请注意，为简单起见，我已将“LIST”重命名为 lst。

lst = [
            {
                "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
                "OUTCOME_CODE": {"value": "ACCPT"},
                "MP_REFERENCE": {"value": 338451},
                "TRANSACTION_REFERENCE": {"value": "213527"},
                "TRANSACTION_TYPE_CODE": {"value": "APPNT"},
                "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
            },
            {
                "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
                "OUTCOME_CODE": {"value": "ACCPT"},
                "MP_REFERENCE": {"value": 519505},
                "TRANSACTION_REFERENCE": {"value": "123456"},
                "TRANSACTION_TYPE_CODE": {"value": "APPNT"},
                "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
            },
            {
                "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
                "OUTCOME_CODE": {"value": "REJCT"},
                "MP_REFERENCE": {"value": 123456},
                "TRANSACTION_REFERENCE": {"value": "475582"},
                "TRANSACTION_TYPE_CODE": {"value": "DEAPP"},
                "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
            }]

correct_dict = {}
for dic in lst:
    if dic["MP_REFERENCE"]["value"] == "123456":
        correct_dict = dic

【讨论】：

【解决方案2】：

In [64]: LIST = [
    ...:             {
    ...:                 "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
    ...:                 "OUTCOME_CODE": {"value": "ACCPT"},
    ...:                 "MP_REFERENCE": {"value": 338451},
    ...:                 "TRANSACTION_REFERENCE": {"value": "213527"},
    ...:                 "TRANSACTION_TYPE_CODE": {"value": "APPNT"},
    ...:                 "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
    ...:             },
    ...:             {
    ...:                 "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
    ...:                 "OUTCOME_CODE": {"value": "ACCPT"},
    ...:                 "MP_REFERENCE": {"value": 519505},
    ...:                 "TRANSACTION_REFERENCE": {"value": "123456"},
    ...:                 "TRANSACTION_TYPE_CODE": {"value": "APPNT"},
    ...:                 "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
    ...:             },
    ...:             {
    ...:                 "RESPONSE_TYPE_CODE": {"value": "RNAGE"},
    ...:                 "OUTCOME_CODE": {"value": "REJCT"},
    ...:                 "MP_REFERENCE": {"value": 123456},
    ...:                 "TRANSACTION_REFERENCE": {"value": "475582"},
    ...:                 "TRANSACTION_TYPE_CODE": {"value": "DEAPP"},
    ...:                 "TRANSACTION_STATUS_CODE": {"value": "ACCPT"},
    ...:             }
    ...:  ]

In [63]: [d for d in LIST if d["MP_REFERENCE"]["value"] == 123456]
Out[63]:
[{'RESPONSE_TYPE_CODE': {'value': 'RNAGE'},
  'OUTCOME_CODE': {'value': 'REJCT'},
  'MP_REFERENCE': {'value': 123456},
  'TRANSACTION_REFERENCE': {'value': '475582'},
  'TRANSACTION_TYPE_CODE': {'value': 'DEAPP'},
  'TRANSACTION_STATUS_CODE': {'value': 'ACCPT'}}]

【讨论】：