Paste keywords to Slack

import json
import requests
import praw
from time import sleep

#  http://praw.readthedocs.io/en/latest/getting_started/authentication.html
reddit = praw.Reddit(client_id='your app client id',
             client_secret='your app client secret',
             username='your bot reddit username',
             password='your bot reddit password',
             user_agent='python3:KeyWordNotify:v1 (/u/Arkaon)')

webhook_url = 'https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX'

you = reddit.redditor('your reddit username')  # this is the account that will receive the messages
subreddit = reddit.subreddit('your subreddit name')  # scan comments in this subreddit

keywords = ['keyword1', 'keyword2', 'keyword3']  # case insensitive
ignore_users = ['baduser1', 'baduser2', 'baduser3']  # case SENSITIVE

already_alerted_submissions = []  # a list of submission ids that you have already been notified for

comment_stream = subreddit.stream.comments()


def main():
    try:
        for comment in comment_stream:

            if comment.submission.id in already_alerted_submissions: continue

            if comment.author:  # if comment author hasn't deleted
                if comment.author.name in ignore_users: continue

            for kw in keywords:
                if kw.lower() in comment.body.lower():  # case insensitive check
                    already_alerted_submissions.append(comment.submission.id)
                    msg = '[Keyword {0} detected](http://www.reddit.com{1})'.format(kw, comment.permalink())
                    slack_data = {'text': msg}

                    response = requests.post(webhook_url, data=json.dumps(slack_data), headers={'Content-Type':'application/json'})
                    if response.status_code != 200:
                        raise ValueError('Request to slack returned an error %s, the response is:\n%s' % (response.status_code, response.text))

    except Exception as e:
        print('There was an error: ' + str(e))
        sleep(60)  # wait for 60 seconds before restarting
        main()


if __name__ == '__main__':
    main()