Blacklist Notification Bot

bot.py

import praw

SUBREDDIT            = 'test'
REPLY_USERNAME       = 'AlternisBot'
KEYWORDS             = ['these', 'words', 'trigger', 'a', 'reply']
BLACKLISTED_KEYWORDS = ['only', 'if', 'these', 'are', 'absent']
 
reddit = praw.Reddit(username='REDDIT_USERNAME',
                     password='REDDIT_PASSWORD',
                     client_id='REDDIT_CLIENT_ID',
                     client_secret='REDDIT_CLIENT_SECRET',
                     user_agent='REDDIT_USER_AGENT')

for submission in reddit.subreddit(SUBREDDIT).stream.submissions(skip_existing=True):
  if has_keyword(submission, KEYWORDS) and not has_keyword(submission, BLACKLISTED_KEYWORDS):
    msg = 'A post was found containing the keyword(s) {} in /r/{}.\n\nLink here: {}'.format(keywords_in(submission), 
											    submission.subreddit.name, 
										            submission.permalink)
    reddit.redditor(REPLY_USERNAME).message('Post found!', msg)                                                

def has_keyword(submission, keywords):
  for keyword in keywords:
    if keyword in submission.title:
      return True

  return False

def keywords_in(submission):
  return ', '.join([keyword for keyword in KEYWORDS if keyword in submission.title])