code: def download_webfile(url, filename, overwrite=False):
      """Small utility to download the file at ``url`` under name ``filename``.
  
      Parameters
      ----------
  
      url : str
        If url is a youtube video ID like z410eauCnH it will download the video
        using youtube-dl. Requires youtube-dl (pip install youtube-dl).
  
      filename : str
        Path to the new downloaded file location.
  
      overwrite : bool, optional
        If the filename already exists and overwrite=False, nothing will happen.
        Use it to force destination file overwriting.
  
      Examples
      --------
  
      >>> from moviepy.io.downloader import download_website
      >>>
      >>> download_website(
      ...     "http://localhost:8000/media/chaplin.mp4",
      ...     "media/chaplin-copy.mp4",
      ... )
      >>>
      """
      if os.path.exists(filename) and not overwrite:  # pragma: no cover
          return
  
      if "." in url:
          with urllib.request.urlopen(url) as req, open(
              filename, "wb"
          ) as f:
              shutil.copyfileobj(req, f, 128)
  
      else:
          try:
              subprocess_call(["youtube-dl", url, "-o", filename])
          except OSError as e:
              raise OSError(
                  (
                      "Error running youtube-dl.\n%sA possible reason is that"
                      " youtube-dl is not installed on your computer. Install it "
                      " with 'pip install youtube_dl'."
                  )
                  % (
                      (
                          e.message + "\n"
                          if hasattr(e, "message")
                          else ""
                      )
                  )
              )
  
imports: import os
  import shutil
  import urllib.request
  from moviepy.tools import subprocess_call
label_desc: Use image node_id 1 for calling a global function with example usage: download_webfile(url, filename, overwrite) without return types