Python2 异步网络请求库比较

封装库

grequests

简介

requests作者写的基于gevent的异步请求库。

地址

https://github.com/kennethreitz/grequests

示例

import grequests

urls = [
    'http://www.heroku.com',
    'http://python-tablib.org',
    'http://httpbin.org',
    'http://python-requests.org',
    'http://fakedomain/',
    'http://kennethreitz.com'
]
rs = (grequests.get(u) for u in urls)
grequests.map(rs)

get方法参数与requests.get()参数相同，当然也支持post，put，delete等方法。
请求失败默认返回None，可以给map方法传递。exception_handler参数指定请求失败的回调函数。

map支持的参数如下：

:param requests: a collection of Request objects.
:param stream: If True, the content will not be downloaded immediately.
:param size: Specifies the number of requests to make at a time. If None, no throttling occurs.
:param exception_handler: Callback functi