在Python中处理JSON

Question

{"required_items":[
                   {
                    "filename":"abcd",
                    "no":"3"
                   },
                   {
                    "filename":"abc",
                    "no":"2"
                   }
                  ]}

我在Python中无法获取JSON格式的代码 - 我想通过循环插入文件名和编号。

---

list_of_other_ids={}
for i in xxxx:    
  entry={}
  entry['filename'] = "XXXX"
  entry['no'] =XX
  list_of_other_ids.append(entry)

我这样做...但失败了。

Answer 1

---

# data.txt

{"required_items":[
                   {
                    "filename":"abcd",
                    "no":"3"
                   },
                   {
                    "filename":"abc",
                    "no":"2"
                   }
                  ]}

# parser.py

import json 

data = json.load(open('data.txt'))

for file in data:
    print file['filename']

# This will output:
#  abcd
#  abc

如果你想添加新的项目：

data.append({ 'filename': 'foo',
            'nr': 1 })

json.dump(data, open('data.txt', 'w'))