import praw
    import config
    import time
    import os

    def bot_login():
        print("Loggin in...")
        r = praw.Reddit(username = config.username,
                password = config.password,
                client_id = config.client_id,
                client_secret = config.client_secret,
                user_agent = "busterronitest's dog --help comment responder v0.1")
        print("Logged in!")

        return r

    def run_bot(r, comments_replied_to):
        print("Obtaining 25 comments...")

        for comment in r.subreddit('testingground4bots').comments(limit=10):

            if "What is a dog?" in comment.body and comment.id not in comments_replied_to and comment.author != r.user.me():
                comment.reply("Dogs are small mammals. ")
                print ("Replied to comment " + comment.id)

                # comments_replied_to.append(comment.id)
                comments_replied_to = list(filter(None, comments_replied_to))

                with open ("comments_replied_to.txt", "a") as f:
                    f.write(comment.id + "n")

        print ("Sleeping for 10 seconds...")
        #Sleep for 10 seconds...
        time.sleep(10)

    def get_saved_comments():
        if not os.path.isfile("comments_replied_to.txt"):
            comments_replied_to = []
        else:
            with open("comments_replied_to.txt", "r") as f:
                comments_replied_to = f.read()
                comments_replied_to = comments_replied_to.split("n")
                comments_replied_to = filter(None, comments_replied_to)

        return comments_replied_to

    r = bot_login()
    comments_replied_to = get_saved_comments()
    print (comments_replied_to)

    count = 0
    while (count < 9):
       print ('The count is:', count)
       count = count + 1
       run_bot(r, comments_replied_to)

    print("Good bye!")

Loggin in...
    Logged in!
    <filter object at 0x7fc15a37f4a8>
    The count is: 0
    Obtaining 25 comments...
    Sleeping for 10 seconds...
    The count is: 1
    Obtaining 25 comments...
    Sleeping for 10 seconds...
    The count is: 2
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    The count is: 3
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    The count is: 4
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    The count is: 5
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    The count is: 6
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    The count is: 7
    Obtaining 25 comments...
    Sleeping for 10 seconds...
    The count is: 8
    Obtaining 25 comments...
    Replied to comment do9htf1
    Sleeping for 10 seconds...
    Good bye!

filter(None, comments_replied_to)

list(filter(None, comments_replied_to))