code: def download_dep(url: str, file: str) -> None:
      import urllib.request
  
      ex = None
      for i in range(3):
          try:
              print(f"Fetching {url} (attempt {i + 1})...")
              content = urllib.request.urlopen(url).read()
              with open(file, "wb") as f:
                  f.write(content)
              break
          except urllib.error.URLError as e:
              ex = e
      else:
          raise RuntimeError(ex)
  
imports: from __future__ import annotations
  import argparse
  import os
  import platform
  import re
  import shutil
  import struct
  import subprocess
label_desc: Use image node_id 12 for calling a global function with example usage: download_dep(url, file) without return types