code: def test_threads_no_main_env():
      """Get raster data using ThreadPoolExecutor with no main thread Env"""
      with ThreadPoolExecutor(4) as pool:
          for res in pool.map(
              get_data, ["tests/data/RGB.byte.tif"] * 10
          ):
              assert res.any()
  
imports: from concurrent.futures import ThreadPoolExecutor
  import rasterio
label_desc: Use image node_id 3 for calling a global function with example usage: test_threads_no_main_env() without return types