Python open source error question

import requests,sys,time,os, argparse

def main():
    os.system('clear')

    parser = argparse.ArgumentParser()
    parser.add_argument('-d', help='path to file of domain list', nargs=1, dest='domain', required=True)
    parser.add_argument('-w', help='payload wordlist', nargs=1, dest='payload', required=True)

    args = parser.parse_args()
    file = args.domain[0]
    payloads = args.payload[0]
    with open(file) as f:
        print ("test")
        time.sleep(4)
        for line in f:
            with open(payloads) as p:
                for payload in p:
                    try:
                        line2 = line.strip()
                        line3 = ('https://') + line2 + payload
                        print (line3)
                        response = requests.get(line3, verify=True)
                        print (response)
                        try:
                            if response.history:
                                print ("It has been was redirected")
                                for resp in response.history:
                                    print ("|")
                                    print (resp.status_code, resp.url)
                                    print ("Final destination:")
                                    print ("+")
                                    print (response.status_code, response.url)
                                else:
                                    print ("Request was not redirected")
                        except:
                                    print ("Error")
                    except:
                        print ("Exit")
try:
    main()
except IndexError:
    print(" Usage: python "+sys.argv[0]+" [subdomains.file] [redirect.payload]\n")
    print(" Example python "+sys.argv[0]+"uber.list '//yahoo.com/%2F..'\n")