Roblox mass asset version downloader

rbxdownload.py

import requests
import os
import json
import sys

fileExtensions = {
    "1": ".png",
    "2": ".rbxm",
    "3": ".ogg",
    "4": ".mesh",
    "5": ".lua",
    "8": ".rbxm",
    "9": ".rbxl",
    "10": ".rbxm",
    "11": ".rbxm",
    "12": ".rbxm",
    "13": ".rbxm",

    "38": ".rbxm"
}

headers = {
    'User-Agent': 'Roblox/WinInet',
    
}
cookies = {
    '.ROBLOSECURITY': '', #Only needed when downloading private files  
}

def downloadAsset(assetId):
    assetApi = "https://assetdelivery.roblox.com/v2/assetId/%s/version/%d"
    if not os.path.isdir("downloads"):
        os.mkdir("downloads")
    status = 200
    lastVersion = 0
    while status == 200:
        lastVersion = lastVersion + 1
        r = requests.get(assetApi.replace("%s",assetId).replace("%d",str(lastVersion)),headers=headers,cookies=cookies)
        status = r.status_code
        if status == 200:
            data = json.loads(r.content)
            try:
                assetUrl = data["locations"][0]["location"]
                extension = fileExtensions[str(data["assetTypeId"])]
                download = requests.get(assetUrl,headers=headers,cookies=cookies, stream=True)
                status = download.status_code
                if status == 200:          
                    print("Downloading "+assetId+" version "+str(lastVersion)+extension)
                    a = open("downloads/"+assetId+" version "+str(lastVersion)+extension, "wb")
                    a.write(download.content)
                    a.close()
                else:
                    print(download)
            except:
                status = 0
        else:
            print(r)
if __name__ == "__main__":
    if not len(sys.argv) > 1:
        print("Asset ID not specified")
    else:
        downloadAsset(sys.argv[1])