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Eventlet
Eventlet is a networking library written in Python. It achieves high scalability by using non-blocking io while at the same time retaining high programmer usability by using coroutines to make the non-blocking io operations appear blocking at the source code level.
Eventlet is different from other event-based frameworks out there because it doesn't require you to restructure your code to use it. You don't have to rewrite your code to use callbacks, and you don't have to replace your main() method with some sort of dispatch method. You can just sprinkle eventlet on top.
Simple Example
This is a simple web crawler that fetches a bunch of urls concurrently:
urls = ["http://www.google.com/intl/en_ALL/images/logo.gif",
"https://wiki.secondlife.com/w/images/secondlife.jpg",
"http://us.i1.yimg.com/us.yimg.com/i/ww/beta/y3.gif"]
import eventlet
from eventlet.green import urllib2
def fetch(url):
return urllib2.urlopen(url).read()
pool = eventlet.GreenPool()
for body in pool.imap(fetch, urls):
print "got body", len(body)Contents
basic_usage patching examples ssl threading hubs testing history
modules
authors
License
Eventlet is made available under the terms of the open source MIT license
Indices and tables
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