Skip to main content

Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.

Project description

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 asyncio

import tornado.web

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

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

async def main():
    app = make_app()
    app.listen(8888)
    await asyncio.Event().wait()

if __name__ == "__main__":
    asyncio.run(main())

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 https://www.tornadoweb.org

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

tornado-6.2.tar.gz (504.8 kB view hashes)

Uploaded source

Built Distributions

tornado-6.2-cp37-abi3-win_amd64.whl (425.3 kB view hashes)

Uploaded cp37

tornado-6.2-cp37-abi3-win32.whl (424.9 kB view hashes)

Uploaded cp37

tornado-6.2-cp37-abi3-musllinux_1_1_i686.whl (426.5 kB view hashes)

Uploaded cp37

tornado-6.2-cp37-abi3-macosx_10_9_x86_64.whl (419.7 kB view hashes)

Uploaded cp37

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page