Find every available domain from a dictionary

domainr.py

#!/usr/bin/env python
# encoding: utf-8
import sys, json, urllib
from optparse import OptionParser

def main():
    parser = OptionParser()
    parser.add_option("-e", "--extension", action="append", type="string", dest="extensions", help="specify domain extension", default=[])
    parser.add_option("-a", "--availability", action="store", type="choice", choices=["taken", "maybe", "available", "unavailable", "tld"], dest="availability", help="specifiy level of availability", default="available")
    parser.set_defaults(verbose=True)
    (options, args) = parser.parse_args()
    for line in sys.stdin:
        domain = line.strip()
        response = json.load(urllib.urlopen("http://domai.nr/api/json/search?q=%s" % domain))
        for result in response['results']:
            if result['availability'] in [options.availability]:
                if options.extensions:
                    for ext in options.extensions:
                        if result["domain"].endswith(ext):
                            print result['domain']
                else:
                    print result['domain']


if __name__ == '__main__':
    try:
        main()
    except (KeyboardInterrupt, SystemExit):
        pass