Pyramid is a web framework to build web applications based on Python. It's easier to use and to handle HTTP requests. You can install pyramid by typing this command:

    $ pip install "pyramid==1.9.1"

It will install pyramid version 1.9.1. You can change it.

For testing, we'll build a simple web application to handle the / request. Use the following code:

from wsgiref.simple_server import make_server 
from pyramid.config import Configurator 
from pyramid.response import Response 
 
def hello_world(request): 
    return Response('Hello World!') 
 
if __name__ == '__main__': 
    with Configurator() as config: 
        config.add_route('hello', '/') 
        config.add_view(hello_world, route_name='hello') 
        app = config.make_wsgi_app() 
     
    print('server is running') 
    server = make_server('0.0.0.0', 8099, app) 
    server.serve_forever() 

Save this program to a file called ch04_pyramid.py.

Now you can run it. Type this command on the terminal.

    $ python ch04_pyramid.py

The program will run on port 8099. Open a browser and navigate to http://localhost:8099. You should get a response saying Hello World! in the browser:

On the terminal side, you can see the running program here: