Quick script to submit a url to subreddits

reddit_submit.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
#  moderator-bot.py
#
#  Copyright 2012 Zach McCullough <nosrepa@gmail.com>
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.

import json
import urllib.request
import re
import sys
from urllib.parse import urlencode
import http.cookiejar
import time

class Reddit(object):
    """Base class to perform the tasks of a redditor."""

    def __init__(self, username, password):
        self.username = username
        self.password = password
        self.cj = http.cookiejar.CookieJar()
        self.opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(self.cj))
        self.opener.addheaders = [('User-agent', 'reddit_submit.py v1')]
        self._login()

    def _request(self, url, body=None):
        if body is not None:
            body = urlencode(body).encode('utf-8')
        with self.opener.open(url, data=body) as w:
            time.sleep(2)
            return json.loads(w.read().decode('utf-8'))

    def _login(self):
        print("Logging in as {}.".format(self.username))
        body = {'user': self.username, 'passwd': self.password, 'api_type': 'json'}
        resp = self._request('https://www.reddit.com/api/login', body)
        self.modhash = resp['json']['data']['modhash']

    def post(self, url, body):
        """Sends a POST to the url and returns the json as a dict."""

        if 'api_type' not in body:
            body['api_type'] = 'json'

        body['uh'] = self.modhash

        return self._request(url, body)

    def get(self, url):
        """Sends a GET to the url and returns the json as a dict."""
        if '.json' not in url:
            url += '.json'
        return self._request(url)


def main(username, password, url, title, subreddits):
    r = Reddit(username, password)
    for s in subreddits:
        print("Submitting \"{}\" to /r/{}:".format(title, s))
        body = {'title': title, 'sr': s,
                    'url': url + username, 'kind': 'link'}
        submission = r.post('http://www.reddit.com/api/submit', body)
        print('http://redd.it/{}'.format(submission['json']['data']['id']))

if __name__ == '__main__':
    args = sys.argv[1:]
    if len(args) >= 5:
        main(args[0], args[1], args[2], args[3], args[4:])
    else:
        print("Usage: `python3 reddit_submit.py <username> <password> <url> \"<title>\" [subreddit,]`")