How to run waitress for a socket.io server without flask in Windows?

Am using Windows 11 and I wish to run a python socket.io server. gunicorn being incompatible with Windows, I tried using waitress to run my server using the following command waitress-serve --listen=*:8000 app:pysock and it throwed me the following exception.

There was an exception (ModuleNotFoundError) importing your module.

It had these arguments:

1. No module named 'app'

Here is my python code :

# filename is pysock.py
import socketio

sio = socketio.Server()
static_files={
    "/":"./public/"
}
app = socketio.WSGIApp(sio,static_files=static_files)

@sio.event
def connect(sid,environ):
    print(sid,"connected")

@sio.event
def disconnect(sid):
    print(sid,"disconnected")

All solutions on stack overflow were based on Flask app and am not using Flask. Is there any way to solve this exception ?

Thanks in Advance