Python CLI doimain ip request

WhoIsDomain.py

import sys
import socket

if len(sys.argv) > 1:
    hostname = str(sys.argv[1])
    print("requested Domain: %s" % hostname)  # show domain name
    try:
        ip = socket.gethostbyname(hostname)
        print("IP: %s" % ip)
    except:
        print("No valid dns name")
else:
    print("No Param")