Twitch Follower Fetcher ver 0.1

import time, json, csv, urllib.request

# Twitch Follower Fetcher ver 0.1
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# <[email protected]> wrote this file. As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return.
# Append Huang ( https://twitch.tv/append )
# ----------------------------------------------------------------------------

#### BEGIN INPUT SECTION ####

# The channel name
username = "append"

# The Client-ID you got at at https://dev.twitch.tv/console/apps
# Note that the default value "p0gch4mp101fy451do9uod1s1x9i4a" will not work
# You'll need to apply one at https://dev.twitch.tv/console/apps if you didn't have one.
client_id = "p0gch4mp101fy451do9uod1s1x9i4a"

# The output file (in csv format)
outputfile = "output.csv"

#### END INPUT SECTION ####

def urlreq(url):
    """
    Basic urllib.request helper function
    Twitch API needs GET method with header contains client-id or OAUTH.
    Actually OAUTH is better for lower limitation, but that's really annoying....
    """
    metadata = {"Client-ID": client_id};
    req = urllib.request.Request(url, headers=metadata);
    res = urllib.request.urlopen(req);
    resData = str(res.read(), encoding='utf-8')
    return json.loads(resData)

def find_id(username):
    """
    Twitch use userid to store all data, but nobody can remember those id.
    We need to convert the username to its userid first.
    """
    url = "https://api.twitch.tv/helix/users?login=" + username;
    resdict = urlreq(url)
    userid = resdict['data'][0]['id']
    return userid

def get_follower_list(userid):
    """
    With the userid, we can obtain 100 followers with the api.
    Here I use a while loop to get the whole follower lists.
    Twitch accept 30 calls in 1 minutes for client-id user,
    so I submit a call every 2 seconds.
    """
    cursor = None
    total = 100
    res_lst = []
    while len(res_lst) < total:
        url = "https://api.twitch.tv/helix/users/follows?first=100&to_id=" + userid
        if cursor:
            url += "&after=" + cursor
        resdict = urlreq(url)
        total = resdict['total']
        cursor = resdict['pagination']['cursor']
        cur_lst = [[x['from_id'], x['from_name'], x['followed_at']] for x in resdict['data']]
        res_lst.extend(cur_lst)
        print('%d/%d'%(len(res_lst),total))
        time.sleep(2)
    return res_lst

def output_csv(outputfile, table):
    """
    For any table (list of list),
    output it in the csv format.
    """
    with open(outputfile, 'w', newline='', encoding='utf-8-sig') as csvfile:
        writer = csv.writer(csvfile)
        writer.writerows(table)
    return

# main sciript
if __name__ == "__main__":
    userid = find_id(username)
    follower_lst = get_follower_list(userid)
    output_csv(outputfile, follower_lst)