python - 如何使用python从文件中打印字典的值

Question

我在文件中有一个字典，并打印文件中的名称值

di = {'elk': [{'url_1': 'localhost:8080/api/running',
                                 'url_2': 'localhost:8080/api/',
                                 'name': 'cat',
                                 'method': 'GET'}],
 'a': [{'url_1': 'localhost:8080/api/running',
                              'url_2': 'localhost:8080/api/',
                              'name': 'mouse',
                              'method': 'GET'}]}

#读取文件

import os
with open('g.txt','r') as fh:
    fh_n = fh.read()

#保存到列表

test = []
for k,v in di.items():
    test.append(v[0]['name'])
test

['cat', 'mouse']

Answer 1

import ast

with open('g.txt','r') as fh:
    fh_n = fh.read()

#first split string and convert into dictionary
data = ast.literal_eval(fh_n.split("=")[1].strip())

#or
#di = remove from text file
#ast.literal_eval(fh_n)

name = [i[0]['name'] for i in data.values()]
print(name)

O/P:

['cat', 'mouse']

或

将文本文件数据转换成json文件g.json 文件

[{
  "di": {
    "elk": [
      {
        "url_1": "localhost:8080/api/running",
        "url_2": "localhost:8080/api/",
        "name": "cat",
        "method": "GET"
      }
    ],
    "a": [
      {
        "url_1": "localhost:8080/api/running",
        "url_2": "localhost:8080/api/",
        "name": "mouse",
        "method": "GET"
      }
    ]
  }
}
]

.py 文件

import json

with open('g.json') as fh:
   data = json.load(fh)

name = [i[0]['name'] for i in data[0]['di'].values()]
print(name)

O/P:

['cat', 'mouse']