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Pre-release

This release is a pre-release and may not be stable for production use.

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

Release files for tornado 6.0a1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for tornado 6.0a1
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Release files / tornado-6.0a1.tar.gz

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Release history Release notifications | RSS feed

6.5.9

10 release files

6.5.6

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6.5.5

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6.5.4

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6.5.3

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6.5.1

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6.5

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6.4.2

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6.4

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6.3.3

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6.1

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6.0.4

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6.0.3

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6.0.2

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6.0.1

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6.0

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This release

6.0a1 This release

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5.1.1

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5.0.2

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5.0.1

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