slacker_checkunread.py

import os,json,logging
from slacker import Slacker

tokenfile = "~/work/tsm/.slacktoken"
token = open(os.path.expanduser(tokenfile), 'r').read().strip('\n')

logging.basicConfig(level=logging.WARN)
log = logging.getLogger()

slack = Slacker(token)

def get_unread(channel_id):
    r = slack.channels.info(channel_id).body
    try:
        return r['channel']['unread_count']
    except KeyError:
        return False

def main():
    r = slack.channels.list().body
    for c in r['channels']:
        unread = get_unread(c['id'])
        if unread:
            print('%d unread messages for channel %s' % \
                       (unread,c['name']))

if __name__ == '__main__':
    main()