tornado怎么读（Taking on the Tornado A Beginner's Guide）

2023-12-29T11:21:34

Taking on the Tornado: A Beginner's Guide

Tornado is a powerful web framework for Python that is widely used for building high-performance web applications. If you are new to Tornado, you may feel a little intimidated at first, but fear not! This article will guide you through the basics of using Tornado and help you get started with your very own Tornado project.

Installing Tornado

Before you can start building your Tornado application, you need to install the framework. Thankfully, this is a simple process that can be accomplished with pip, which is a package manager for Python. Open up your terminal or command prompt and run the following command:

pip install tornado

Once the installation is complete, you are ready to start building your Tornado application.

Creating a Tornado Application

Now that Tornado is installed, you can start building your own application. The first step is to create a new Python file and import the necessary modules:

import tornado.ioloop
import tornado.web

The next step is to create a handler for your application. A handler is responsible for responding to HTTP requests that are made to your application. Here is an example handler:

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

In this example, we have created a handler called MainHandler that responds to HTTP GET requests. When a GET request is made to our application, the get() method is called and the message \"Hello, Tornado!\" is returned.

Now that we have our handler, we need to create a Tornado application. Here is an example:

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

The make_app() function creates a new Tornado application and defines the route for our MainHandler. In this case, the route is set to \"/\" which means that our MainHandler will respond to requests for the root URL.

Finally, we need to start the Tornado server and listen for incoming requests. Here is an example:

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

In this example, we create a new Tornado application using the make_app() function and then we start the server listening on port 8888. With this code, you can now run your Tornado application and see the \"Hello, Tornado!\" message in your browser.

Conclusion

And there you have it! With these basic concepts, you can start building your own Tornado applications. Tornado has many powerful features and can handle thousands of concurrent connections, making it a great choice for building high-performance web applications. Happy coding!