#!/usr/bin/env python3
import sys
import urllib.request

def download_file(url, destination):
    try:
        urllib.request.urlretrieve(url, destination)
    except Exception as e:
        print(f"An error occurred: {e}", file=sys.stderr)

if __name__ == "__main__":
    if len(sys.argv) != 3:
        print("Usage: python download.py <url> <destination>", file=sys.stderr)
        sys.exit(1)

    url = sys.argv[1]
    destination = sys.argv[2]

    download_file(url, destination)