ogs game downloader

#!/usr/bin/env python3
import requests
import json
import os

sess=requests.Session()

def raw_get(url, filepath, skip_read=False):
    if os.path.exists(filepath) and os.path.getsize(filepath)>0:
        if skip_read:
            print("skip", filepath)
            content=""
        else:
            with open(filepath,"rb") as f:
                content=f.read()
            print("read", filepath)
    else:
        print("GET", url)
        xx=sess.get(url)
        content=xx.text
        with open(filepath,"wb") as f:
            f.write(content.encode("utf8"))
        print("saved", filepath)
    return content

def json_get(url, filepath):
    return json.loads(raw_get(url, "./json/"+filepath))

def get_player_id(username):
   url="http://online-go.com/api/v1/players?username=" + username
   ds=json_get(url, "player-{}.json".format(username));
   return ds["results"][0]["id"]
   # Player not found ?

def is_bot_game(g):
    return g["players"]["white"]["ui_class"] == "bot" \
    or g["players"]["black"]["ui_class"] == "bot"

def get_games(pid, count):
    page=1
    gameCount=0
    while gameCount < count:
        ds = json_get("http://online-go.com/api/v1/players/{}/games?ordering=-id&page={}".format(pid, page), "gamelist-{}-{}.json".format(pid,page))
        games = ds["results"]
        for g in games:
            if not is_bot_game(g):
                raw_get(
                "http://online-go.com/api/v1/games/{}/sgf".format(g["id"]),
                    "./sgf/{}-{}-{}.sgf".format(
                        g["id"],
                        g["players"]["black"]["username"],
                        g["players"]["white"]["username"]),
                    skip_read=True)
                gameCount += 1
                if gameCount == count:
                    break
        page += 1
        print("games: %d/%d" % (gameCount,count))

def make_dir(d):
    if not os.path.exists(d):
        os.mkdir(d)
        print("created directory", d)

def main():
    make_dir("json")
    make_dir("sgf")
    username=input("Input your username(case sensitive): ")
    try:
        userid=get_player_id(username)
    except:
        print("failed to get user id")
        return
    count=40
    print("player id:", userid)
    print("fetching game list")
    get_games(userid, count)

main()