在python中获取url的内容

Question

import urllib2
response = urllib2.urlopen('http://api.xyz.com')
html = response.read()

IN http://api.xyz.com

{
  "responseHeader":{
    "status":0,
    "QTime":18,
    "params":{
      "indent":"on",
      "q":"",
      "wt":"json",}},
  "response":{"numFound":7984,"start":0,"maxScore":1.0,"docs":[
      {
       "id":"21",
       "first_name":"anurag"
      },
      {
       "id":"31",
       "first_name":"abhishek"
      }
    ]
}

问题是：这个url会返回json输出。我想读取该json文件，但它显示错误：字符串索引必须是整数，而不是str。

Answer 1

您需要使用json library（包含在Python中）将JSON响应转换为python结构：

import json

import urllib2
response = urllib2.urlopen('http://api.xyz.com')
data = json.load(response)  # note, no `.read()`, the library handles that

print data['response']