如何在python

Question

我的json文件名为＆＃34; panamaleaks50k.json＆＃34; 。我想从json文件中获取[＆＃39; text＆＃39;]字段，但它显示我跟踪错误

  

JSON对象必须是str，bytes或bytearray，而不是＆＃39; TextIOWrapper＆＃39;

这是我的代码

with open('C:/Users/bilal butt/Desktop/PanamalEakJson.json','r') as lst:
    b = json.loads(lst)
    print(b['text'])

我的json文件看起来

[
{
   "fullname": "Mohammad Fayyaz",
   "id": "885800668862263296",
   "likes": "0",
   "replies": "0",
   "retweets": "0",
   "text": "Love of NS has been shown in PanamaLeaks scandal verified by JIT...",
   "timestamp": "2017-07-14T09:58:31",
   "url": "/mohammadfayyaz/status/885800668862263296",
   "user": "mohammadfayyaz"
 },
{
  "fullname": "TeamPakistanPTI \u00ae",
  "id": "885800910357749761",
  "likes": "0",
  "replies": "0",
  "retweets": "0",
  "text": "RT ArsalanISF: #PanamaLeaks is just a start. U won't believe whr...",
  "timestamp": "2017-07-14T09:59:29",
  "url": "/PtiTeampakistan/status/885800910357749761",
  "user": "PtiTeampakistan"
 }
]

我如何阅读所有[＆＃39;文字＆＃39;]和单个[＆＃39;文字＆＃39;]字段？

Answer 1

您应该将文件内容（即字符串）传递给json.loads()，而不是文件对象本身。试试这个：

with open(file_path) as f:
    data = json.loads(f.read())
    print(data[0]['text'])

还有json.load()函数，它接受一个文件对象并为你做f.read()部分。

Answer 2

如果您的输入是类文件对象（例如TextIOWrapper），请使用json.load()，而不是json.loads()。

鉴于以下完整的复制品：

import json, tempfile
with tempfile.NamedTemporaryFile() as f:
    f.write(b'{"text": "success"}'); f.flush()
    with open(f.name,'r') as lst:
        b = json.load(lst)
        print(b['text'])

...输出为success。