Python下的Request库

需要用到网页获取，想到了之前用过的urllib2。由于是几年前用的，也想找找有没有替代品，刚好试试Request吧。
主页在这里：http://docs.python-requests.org/en/latest/

这里的答案对Request很推崇，列举了很多优点：

First, it supports a fully restful API, and is as easy as:

import requests
...

req = requests.get('http://www.mywebsite.com/user')
req = requests.post('http://www.mywebsite.com/user')
req = requests.put('http://www.mywebsite.com/user/put')
req = requests.delete('http://www.mywebsite.com/user/delete')

从代码来看确实很简洁，同时使用字典作为提交的参数

Regardless of whether GET/POST you never have to encode parameters again, it simply takes a dictionary as an argument and is good to go.

userdata = {"firstname": "John", "lastname": "Doe", "password": "jdoe123"}
req = requests.post('http://www.mywebsite.com/user', params=userdata)

内建了json解码器，读取json格式更简便

Plus it even has a built in json decoder (again, i know json.loads() isn’t a lot more to write, but this sure is convenient):

resp.json()

如果处理的数据是文本数据，可以直接使用req.text得到。

官网上也列举了很多有用的特征
- International Domains and URLs
- Keep-Alive & Connection Pooling
- Sessions with Cookie Persistence
- Browser-style SSL Verification
- Basic/Digest Authentication
- Elegant Key/Value Cookies
- Automatic Decompression
- Unicode Response Bodies
- Multipart File Uploads
- Connection Timeouts
- .netrc support
- List item
- Python 2.6—3.4
- Thread-safe.

ok，看着还不错，试试吧。

安装
使用pip安装：

>pip install requests

此时安装最新版本是2.7.0.