How to Retrieve Page Content from Asynchronous Requests in Python\'s Requests Library?

Asynchronous Request Handling with Python Requests Library

Challenge:

While the Requests library's documentation provides an example for performing asynchronous requests, it lacks guidance on retrieving page content. The following code fails to access the content:

out = async.map(rs)
print out[0].content

Solution:

To perform multiple asynchronous tasks using async.map, follow these steps:

1. Define a Task Function: Create a function to handle each task or response object.
2. Add an Event Hook: Add this function as an event hook in the request to specify what to do with the response.
3. Map the Requests: Call async.map with a list of all the requests or actions you wish to execute asynchronously.

Example:

Consider a list of URLs and a simple task of printing the response URL:

import async

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

def do_something(response):
    print(response.url)

async_list = []

for u in urls:
    action_item = async.get(u, hooks={'response': do_something})
    async_list.append(action_item)

async.map(async_list)

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