Leaderboard Generator

import praw
import json
from pprint import pprint
from praw.models import MoreComments
import re
import timeit

def generateRollingLeaderboard(currentRoundNum, interval):
    unsortedLeaderboardLastInterval = {}
    for user in leaderboard:
        winCountLastInterval = 0
        rounds = leaderboard[user]["rounds"]
        for round in rounds:
            if(int(round) >= (currentRoundNum - interval)):
                winCountLastInterval += 1
        if(winCountLastInterval > 0):
            unsortedLeaderboardLastInterval[user] = winCountLastInterval
    sortedLeaderboardLastInterval = sorted(unsortedLeaderboardLastInterval.items(), key=lambda x: x[1], reverse=True)
    outputString = ""
    for user in sortedLeaderboardLastInterval:
        outputString += ("%s, %d\n" % (user[0], user[1]))
    with open('rollingLeaderboard.txt', 'w') as f:
        f.write(outputString)
    f.close();

def generateIntervalLeaderboard(startRoundNum, endRoundNum):
    unsortedLeaderboard = {}
    outputString = ""
    for user in leaderboard:
        winCount = 0
        rounds = leaderboard[user]["rounds"]
        for round in rounds:
            if(int(round) >= startRoundNum and int(round) <= endRoundNum):
                winCount += 1
        if(winCount > 0):
            unsortedLeaderboard[user] = winCount
    sortedLeaderboard = sorted(unsortedLeaderboard.items(), key=lambda x: x[1], reverse=True)
    for user in sortedLeaderboard:
        outputString += ("%s, %d\n" % (user[0], user[1]))
    with open('intervalLeaderboard.txt', 'w') as f:
        f.write(outputString)
    f.close();

class Round(object):
    def __init__(self, host, number, title, duration, startTime, endTime, winner):
        self.host = host
        self.number = number
        self.title = title
        self.duration = duration
        self.startTime = startTime
        self.endTime = endTime
        self.winner = winner
    def toJSON(self):
        return json.dumps(self, default=lambda o: o.__dict__, sort_keys=True, indent=4)

roundList = []
reddit = praw.Reddit(user_agent='PG Stats Generator', client_id='', client_secret='', username='', password='')
PictureGame = reddit.subreddit('PictureGame')
wikiPageData = PictureGame.wiki["leaderboard"].content_md.split('\n')[4:-1]
leaderboard = {}
for line in wikiPageData:
    _, name, rawRounds, _ = line.split(" | ")
    rounds = [int(re.sub(r"\D", "", rawRound)) for rawRound in \
        re.findall(r"[\w\d]+", rawRounds)]

    leaderboard[name] = {
        "wins": len(rounds),
        "rounds": rounds
    }
generateRollingLeaderboard(38029, 500)