Praw AttributeError: 'NoneType' object has no attribute 'get_comments'
Question: I wrote a simple script for identifying users who contribute to certain
subreddits. As a disclaimer, if you plan on using this code you should be sure
to anonymize the data (as I will, by aggregating data and removing all
usernames). It works with certain subreddits but does not seem to be very
robust, as seen by the following error I get when I run it with /r/nba:

AttributeError: 'NoneType' object has no attribute 'get_comments'

Below is my code:

    
    
    import praw
    import pprint
    users = [] #[username, flair, comments]
    
    r=praw.Reddit(user_agent="user_agent")
    r.login("username", "password")
    submissions = r.get_subreddit('nba').get_top(limit=1) #won't work with higher limit?
    for submission in submissions:
        submission.replace_more_comments(limit=3, threshold=5)
        flat_comments = praw.helpers.flatten_tree(submission.comments)
        for comment in flat_comments:
            user_comments = []
            for i in comment.author.get_comments(limit=2):
                user_comments.append(i.body)
                #user_comments.append(str(i.body)) #sometimes causes an error as well
            users.append([str(comment.author), comment.author_flair_text, user_comments])
    
    pprint.pprint(users)
    

When I change the subreddit to 'python' it seems to encounter less problems,
so hopefully someone can point out what I'm missing. Thanks in advance!


Answer: Ok, so you see the line

    
    
    for i in comment.author.get_comments(limit=2):
    

I presume your code is failing because

    
    
    comment.author is None
    

