from urllib3 import disable_warnings
from urllib3.exceptions import InsecureRequestWarning

import requests

disable_warnings(InsecureRequestWarning)

url = input('Please input full URL:\n')
size_of_parts = input('Please input size of file parts in MB:\n')

with open(url.split('/')[-1], 'wb') as file:
    print('Start downloading...')
    response = requests.get(url, stream=True, verify=False)
    for chunk in response.iter_content(int(size_of_parts)*1048576):
        file.write(chunk)
    print('Done')