Join the chat at https://gitter.im/tornadoweb/tornado

Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.

Hello, world

Here is a simple “Hello, world” example web app for Tornado:

import tornado.ioloop
import tornado.web

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")

def make_app():
    return tornado.web.Application([
        (r"/", MainHandler),
    ])

if __name__ == "__main__":
    app = make_app()
    app.listen(8888)
    tornado.ioloop.IOLoop.current().start()

This example does not use any of Tornado’s asynchronous features; for that see this simple chat room.

Documentation

Documentation and links to additional resources are available at http://www.tornadoweb.org

Project links

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Newer release available (6.5.8)

2 maintainers

PyPI data
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Credits

Author: Facebook

License

Apache Software License (http://www.apache.org/licenses/LICENSE-2.0)

Requires

Python >= 3.5

Classifiers

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