笔记

以下答案 不适 用于请求 v0.13.0+。编写此问题后，异步功能已移至grequests
。但是，你可以requests用grequests下面的替换它应该可以工作。

我留下这个答案是为了反映关于使用 requests < v0.13.0 的原始问题。

要async.map 异步 执行多项任务，您必须：

1. 为每个对象（您的任务）定义一个函数
2. 在您的请求中将该函数添加为事件挂钩
3. 调用async.map所有请求/操作的列表

例子：

from requests import async
# If using requests > v0.13.0, use
# from grequests import async

urls = [
    'http://python-requests.org',
    'http://httpbin.org',
    'http://python-guide.org',
    'http://kennethreitz.com'
]

# A simple task to do to each response object
def do_something(response):
    print response.url

# A list to hold our things to do via async
async_list = []

for u in urls:
    # The "hooks = {..." part is where you define what you want to do
    # 
    # Note the lack of parentheses following do_something, this is
    # because the response will be used as the first argument automatically
    action_item = async.get(u, hooks = {'response' : do_something})

    # Add the task to our list of things to do via async
    async_list.append(action_item)

# Do our list of things to do via async
async.map(async_list)