Question

我是JSON的新手，我想获得标签＆＃39;来自我的JSON数据这是我的JSON数据，我使用json.dumps将其转换为JSON格式

a = json.dumps({"Name": "Robert",
   "Date" : "January 17th, 2017",
   "Address" : "Jakarta"})

我想打印我的JSON数据的标签，有没有可行的方法呢？我想要的结果是

Name
Date
Address

Answer 1

您必须将json转换为dict，然后labels与keys相同。

import json
a = json.dumps({"Name": "Robert",
   "Date" : "January 17th, 2017",
   "Address" : "Jakarta"})
for key in json.loads(a):
    print(key)

输出：

Name
Date
Address

<强>可选：

如果您想访问每个项目的值

import json
a = json.dumps({"Name": "Robert",
   "Date" : "January 17th, 2017",
   "Address" : "Jakarta"})
d = json.loads(a)
for key in d:
     print("key: {}, value: {}".format(key, d[key]))

<强> Python2

for key, value in json.loads(a).iteritems():
     print("key: {}, value: {}".format(key, value))

<强> Python3

for key, value in json.loads(a).items():
     print("key: {}, value: {}".format(key, value))

输出：

key: Name, value: Robert
key: Date, value: January 17th, 2017
key: Address, value: Jakarta

Answer 2

做出的假设：

我以为您使用的是python3.x

您可以按照以下方式执行此操作：

import json
a = json.dumps({"Name": "Robert", "Date" : "January 17th, 2017", "Address" : "Jakarta"})
a_dict = json.loads(a)
for key in a_dict.keys():
    print (key)

Answer 3

我认为你需要使用load来创建一个json对象。所以在Python3中：

import json

a = json.loads('{"Name":"Robert","Date":"January 17th, 2017","Address":"Jakarta"}')

for key, value in a.items() :
    print (key)

Answer 4

下面的python代码将获取json文件作为输入，并在各个级别生成一个带有json标签的文件。

from re import sub
from os.path import abspath, realpath, join, dirname
import json
Srcfilename = input("Enter Srcfilename: ") 
file = abspath(Srcfilename)
file_open = open(file, 'r')
file_read = file_open.read()
#print(file_read)
jdata = json.loads(file_read)

def get_keys(dl, keys_list1):
        if isinstance(dl, dict):
            for key1,info1 in dl.items():
               # print(key1)
                keys_list1.append(key1)
                #print("\nlistinfo:",info1)
                if isinstance(info1, dict) or isinstance(info1, list)  :
                        get_keys(info1, keys_list1)
        elif isinstance(dl, list):
             if isinstance(dl[0], dict):
                for key2,info2 in dl[0].items():
                  #  print(key2)
                    keys_list1.append(key2)
                   # print("\nlistinfo:",info2)
                    if isinstance(info2, dict) or isinstance(info2, list)  :
                        get_keys(info2, keys_list1)
        keys_list1 = list(dict.fromkeys(keys_list1))                
        keylist='\n'.join(map(str, keys_list1))
        
        return keylist              
      

        
keys_list1=[]
Tgtfilename = input("Enter Tgtfilename: ") 
new_file = abspath(Tgtfilename)
new_file_open = open(new_file, 'w')
content=get_keys(jdata, keys_list1)
print (keys_list1)
new_file_open.write(content)
new_file_open.close()

在JSON Python上获取标签名称

4 个答案: