get list of subreddits we are banned from

find_banned_subreddits.py

    # fetch our inbox, find subreddits we are banned from in advance
    my_inbox = None
    try:
        my_inbox = r.user.get_inbox()
    except:
        #TODO: handle some exceptions here!
        raise
    if (my_inbox):
        for m in my_inbox:
            s = re.match("you have been banned from posting to \[.*\]\(/r/(.*)/\)\.",m.body)
            if (s != None):
                banned_subreddits.add(s.group(1))