def main():
parser = OptionParser(usage="%prog [opts] userid", version="%prog " + VERSION)
parser.add_option("-u", "--user", action="store", type="int", dest="userid",
help="Specify user ID whose posts to search (required or pass as unnamed argument)")
parser.add_option("-s", "--site", action="store", type="string",
default='stackoverflow.com', dest="site",
help='Which site to query. (default: stackoverflow.com)')
parser.add_option("-t", "--type", action="store", type="choice",
default="answers", choices=VALID_TYPES, dest="query_type",
help="What type of post to query. Options: " + ', '.join(VALID_TYPES) + " (default: answers)")
parser.add_option("-c", "--chain-length", action="store", type="int",
dest="chain_length", default=6,
help="Number of words to traverse in a single chain (default: 6)")
parser.add_option("-n", "--num-chains", action="store", type="int",
dest="num_chains", default=25,
help="Number of chains to traverse in output (default: 25)")
parser.add_option("-k", "--api-key", action="store", type="string",
dest="api_key", help="API key (default: none)")
(options, args) = parser.parse_args()
if len(args) == 1:
try:
options.userid = int(args[0])
except ValueError:
die("User ID must be an integer.")
if options.userid is None or len(args) > 1:
die("No user ID specified.")
grabber = Grabber(options.site, options.userid)
minimal_text = grabber.minimal_text(options.query_type)
if not minimal_text:
die("No posts found from that user.")
spam = markovchain(' '.join(minimal_text), options.chain_length, options.num_chains)
print spam
