import praw
import random

reddit = praw.Reddit(
    client_id="",
    client_secret="",
    user_agent="",
    username="",
    password=""
)

hi_quotes = ['ok', 'bosf']
subreddit = 'redditdev'

for comment in reddit.subreddit(subreddit).stream.comments(skip_existing=True):
    if "hi" in comment.body.lower():
        print(f"Matched comment {comment.id} - now replying")
        random_index = random.randint(0,len(hi_quotes)-1)
        comment.reply(str(hi_quotes[random_index]))