Get the last post number from 4chan

get.py

#!/usr/bin/python
from __future__ import print_function
import sys
if sys.version_info[0] == 3:
    import urllib.request as urllib
else:
    import urllib2 as urllib
import json

def usage():
    print("Usage: %s board" % sys.argv[0], file=sys.stderr)

def main(args):
    try:
        board = args[0]
    except:
        usage()
        sys.exit(1)

    f = urllib.urlopen('https://a.4cdn.org/%s/1.json' % board)
    data = json.load(f)
    f.close()

    t = 0
    while True:
        try:
            data['threads'][t]['posts'][0]['sticky']
        except:
            break
        t += 1

    p = 0
    while True:
        try:
            data['threads'][t]['posts'][p]
        except:
            p -= 1
            break
        p += 1

    print(data['threads'][t]['posts'][p]['no'])

if __name__ == '__main__':
    main(sys.argv[1:])