Python wrappers for a couple Nightcafe API endpoints

import json
import requests
import sys
import time

def get_nightcafe_user_feed (user_id, json_file=None, image_path=None, max_items=999999999):
    base_url = "https://api.nightcafe.studio/creations?query=user-recent&user="
    last_id = None
    items = []
    going = True
    while going:
        url = base_url + user_id
        if last_id:
            url = url + "&lastVisibleId=" + last_id
        r = requests.get (url)
        data = r.json ()
        last_id = data["lastVisibleId"]
        going = last_id != ""
        results = data["results"]
        items.extend (results)
        if len (items) >= max_items:
            going = False
        time.sleep (1)
    if json_file is not None:
        with open (json_file, "w") as f:
            json.dump (items, f, indent=2)
    if image_path is not None:
        image_path = image_path.strip ()
        if not image_path.endswith ("/"):
            image_path = image_path + "/"
        for item in items:
            url = "https://images.nightcafe.studio/" + item["output"]
            image = requests.get (url).content
            with open (image_path + item["id"] + ".jpeg", "wb") as f:
                f.write (image)
    return items

def get_nightcafe_followers (user_id, json_file=None, max_items=999999999):
    base_url = "https://api.nightcafe.studio/follows?query=user-followers&user="
    last_id = None
    items = []
    going = True
    while going:
        url = base_url + user_id
        if last_id:
            url = url + "&lastVisibleId=" + last_id
        r = requests.get (url)
        data = r.json ()
        last_id = data["lastVisibleId"]
        going = last_id != ""
        results = data["results"]
        items.extend (results)
        if len (items) >= max_items:
            going = False
        time.sleep (1)
    if json_file is not None:
        with open (json_file, "w") as f:
            json.dump (items, f, indent=2)
    return items

if __name__ == "__main__":
    user_id = sys.argv[1]
    get_nightcafe_user_feed (user_id, json_file=user_id + "_nightcafe_feed.json"),
    get_nightcafe_followers (user_id, json_file=user_id + "_nightcafe_followers.json")