subreddit_user_rank.py

import praw
import arrow
import heapq

reddit = praw.Reddit(client_id='51SqtrEzmCTnuA',
                     client_secret='xehsxI2Sm81wHZpSa_PcmKcv5_k',
                     user_agent='me-on-reddit')

# for submission in reddit.subreddit('samharris').hot(limit=10):
    # if(len(submission.comments) < 10):
        # for comm in submission.comments:
            # print(comm.body)

subreddit = reddit.subreddit('samharris')

def tally_user_details( sub, weeks_in_past=25 ):
    subreddit = reddit.subreddit(sub)
    end = arrow.utcnow()
    user_scores = {}

    for week in range(weeks_in_past):
        start = end.replace(weeks=-1)
        submissions = subreddit.submissions(start.timestamp, end.timestamp)

        for sub in submissions:
            comments = sub.comments
            for c in comments:
                if c.author: # Not interested in authorless comments for THIS bit.
                    if c.author not in user_scores:
                        user_scores[c.author.name] = c.score
                    else:
                        user_scores[c.author.name] += c.score

        end = start
        print("Week ", week + 1, " completed. ", start.humanize(), " to ", end.humanize())

    return user_scores

def top_X_of_dict( dictionary, x=5):
    top_X = heapq.nlargest(x, dictionary, key=dictionary.get)
    return {k: dictionary[k] for k in top_X}

def display_users_dict( user_dict ):
    for key in user_dict:
        print(key, ": ", user_dict[key])


if __name__ == '__main__':
    user_scores = tally_user_details( 'samharris', weeks_in_past=2 )
    best_user = max(user_scores, key=user_scores.get)
    top = top_X_of_dict( user_scores )
    display_users_dict( top )