how can i create a local dns in python

Question

i wrote a script getting my ip address and connecting it to a file. what i want is to change the ip address to a dns which i can access on both my laptop and other devices that are connected to the same wifi or router.

from fileinput import filename
from importlib.resources import contents
import socket
from urllib import response

PORT = 5050
IP = socket.gethostbyname(socket.gethostname())
print(IP)
ADDR = (IP, PORT)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((IP, PORT))
s.listen(5)

while True:
    clientSocket, address = s.accept()
    print(f'Connection established from address {address}')
    req = clientSocket.recv(1024)
    filename = 'hello.html'
    f = open(filename, 'r')
    content = f.read()

    f.close()

    response = 'HTTP/1.0 200 OK\n\n' + content
    clientSocket.sendall(response.encode())

    clientSocket.close()