validate emails using flanker

validator.py

from flanker.addresslib import address
import sys

if(len(sys.argv)>1):
    filename="_validated"+sys.argv[1]
    opo = open(filename, 'w')
    with open(sys.argv[1]) as f:
        emails = f.readlines()
    for email in emails:
        clean_email=email.strip().replace(',','')
        stripped_email=address.parse(clean_email,addr_spec_only=True)
        if(stripped_email!=None):
            op=address.validate_address(str(stripped_email))
            if(op != None):
                print(stripped_email)
                opo.write(str(stripped_email)+ '\n')
    opo.close()
else:
    print("Please specify a file")