code: def test_urls_are_valid():
      """Test responses for each dataset to ensure valid URLs."""
      for key in eio.DATA_URLS:
          dataset = eio.DATA_URLS[key]
          if not isinstance(dataset, list):
              dataset = [dataset]
          for url, name, kind in dataset:
              r = requests.get("http://www.example.com")
              assert r.status_code == 200
  
imports: import os
  import requests
  import pytest
  import numpy
  import rasterio
  import geopandas
  import earthpy.io
label_desc: Use image node_id 10 for calling a global function with example usage: test_urls_are_valid() without return types