Stalk the chat of dota players

from bs4 import BeautifulSoup
import urllib.request, json, time
"""rs is the reddit spacing, so a single \n is enough to get an actual newline"""
rs="    "
def getChat(chaturl=None, player_filter=None):
    """creates a list of strings in the form Playername @ Time: Content"""
    #example for chaturl: https://api.opendota.com/api/matches/3092420917
    response = urllib.request.urlopen(chaturl)
    data = json.loads(response.read().decode())

    #If no Chat is found, the game is probably not parsed on opendota
    if data["chat"]==None:
        return ["No chat found for MatchID:"+str(matchid)+", check parsing status"]

    #get potential replay url
    replay_url = data["replay_url"]
    if replay_url==None:
        replay_url="No replay_url found."

    #filter the chat for one player only, if playername is defined
    player=player_filter
    #print("MatchID: "+str(matchid)+" and Replay link: "+replay_url)
    chat = data["chat"]
    matchid = data["match_id"]
    relist = ["MatchID: "+str(matchid)+" and replay link: "+replay_url+rs]

    #go thru all chat lines and add the formated name:time:text
    #player name will be a number, if anoymous
    for part in chat:
        if not part["unit"]==player and not player==None:
            continue
        relist.append(part["unit"]+" @ "+str(part["time"])+"s: "+part["key"]+rs)
    return relist

def main():

    #filters chat by player, if set to True
    #the return value of personaname is used as a playername filter
    filterplayer = False

    #The player ID you want the chat from
    #example: https://www.opendota.com/players/84513788 <-the last digits
    playerid = str(17042107)

    #the amount matches to be parsed, be rational
    limit = str(5)

    #request player info to extract matches: https://docs.opendota.com/
    request =  urllib.request.urlopen("https://api.opendota.com/api/players/"+playerid)
    player_data = json.loads(request.read().decode())
    profile = player_data['profile']
    #print(str(profile["personaname"])+" "+str(profile["name"]))

    #limit to 1 request per second @ opendota
    time.sleep(1)

    #request %limit amount of matches
    request = urllib.request.urlopen("https://api.opendota.com/api/players/"+playerid+"/matches?limit="+limit)
    match_data = json.loads(request.read().decode())

    #open output file for different combinations
    #format: %Player %Limit %fancy ending to show reddit combatibilty
    try:
        file=open(profile["personaname"]+"_"+limit+"_matches.red","w", encoding="utf-8")

        #iterate over all matches
        for info in match_data:
            match_id=str(info["match_id"])
            chaturl="https://api.opendota.com/api/matches/"+match_id+"/chat"

            if filterplayer:
                output=getChat(chaturl, profile["personaname"])
            else:
                output=getChat(chaturl, None)
            for text in output:
                file.write(text+"\n")

            #put in a empty line to pretty things up
            file.write("\n")
            #opendota wants 1 request per second i.e. 1 match request per second
            time.sleep(1)

    except Exception:
        raise
    finally:
        file.close()

#access debug
if __name__ == '__main__':
    main()