使用Python在JSON中查找值

使用Python在JSON中查找值

您必须遍历字典列表并使用给定的字典进行搜索

id_number

。一旦找到它，您就可以打印其其余数据并中断（假设

id_number

是唯一的）。

data = [ {   "id_number": "SA4784",   "name": "Mark",   "birthdate": None }, {   "id_number": "V410Z8",   "name": "Vincent",   "birthdate": "15/02/1989" }, {   "id_number": "CZ1094",   "name": "Paul",   "birthdate": "27/09/1994" }]for i in data:    if i['id_number'] == 'V410Z8':        print(i['birthdate'])        print(i['name'])        break

如果您可以控制数据结构，则更有效的方法是使用

id_number

键作为键（同样，假设

id_number

是唯一的）：

data =  { "SA4784" : {"name": "Mark", "birthdate": None},          "V410Z8" : { "name": "Vincent", "birthdate": "15/02/1989"},          "CZ1094" : {"name": "Paul", "birthdate": "27/09/1994"}        }

然后，您需要做的就是尝试直接访问它：

try:    print(data["V410Z8"]["name"])except KeyError:    print("ID doesn't exist")>> "Vincent"