Download Snapchat Memories from a JSON file (Comes from the Snapchat data dump)

snapchat-memory-downloader.py

import json
import os
import mimetypes
import requests
import datetime as dt

from multiprocessing.pool import ThreadPool as Pool

with open('memories.json', 'r') as memories_file:
    memories_data=memories_file.read()

memories = json.loads(memories_data)

if os.path.isdir("memories") == False:
    print("Missing memories directory")
    exit()

skipped = 0
processed = 0

def run_memory(memory):
    global skipped
    global processed

    date_string = memory['Date'].split(' ')
    date_string.pop()
    date = dt.datetime.strptime(' '.join(date_string), '%Y-%m-%d %H:%M:%S')

    id = memory['Download Link'].split('&mid=')[1].split('&')[0]
    file_type = 'mp4' if memory['Media Type'] == "VIDEO" else "jpg"
    location = "memories/{}/{}".format(date.year, "{}-{}-{}_{}.{}".format(date.month, date.day, date.year, id, file_type))

    if os.path.isfile(location) == True:
        skipped = skipped + 1
        print("Skipping {}, already exist".format(id))
    else:
        print("{}/{} : Retrieving download link for {} - {}".format(len(memories['Saved Media']) - (skipped + processed), len(memories['Saved Media']), memory["Media Type"], id))
        download_url = requests.post(memory['Download Link']).text

        # make sure the directory exists
        if os.path.isdir("memories/{}".format(date.year)) == False:
            os.mkdir("memories/{}".format(date.year))

        split_url = download_url.split('?')[0]
        url = split_url[0:int(48/2)] + '...' + split_url[int(len(split_url)-48/2):len(split_url)]
        print("Downloading {} to {}".format(url, location))

        file_contents = requests.get(download_url)
        open(location, 'wb').write(file_contents.content)
        processed = processed + 1


if __name__=="__main__":
    pool=Pool(20)
    print("Starting to download {} memories".format(len(memories)))
    for memory in memories['Saved Media']:
        pool.apply_async(run_memory, (memory,))
        #run_memory(memory)

pool.close()
pool.join()

is there also way to edit the exif date in a way that we can also see the time the medias were taken?