code: def is_url(path):
      """
      Whether path is URL.
      Args:
          path (string): URL string or not.
      """
      return (
          path.startswith("http://")
          or path.startswith("https://")
          or path.startswith("ppdet://")
      )
  
imports: import os, sys
  import os.path
  import hashlib
  import requests
  import shutil
  import tqdm
  import time
  import tarfile
  import zipfile
  from paddle.utils.download import _get_unique_endpoints
label_desc: Use image node_id 1 for calling a global function with example usage: is_url(path) and returns: unknown