code: def test_no_import_warning() -> None:
      out = subprocess.run(
          ["python", "-c", "import nevergrad as ng"],
          check=True,
          stderr=subprocess.PIPE,
      ).stderr
      assert not out
  
file_path: nevergrad/nevergrad/common/test_testing.py
imports: import sys
  import unittest
  import platform
  import subprocess
  import typing
  from pathlib import Path
  import pytest
  import numpy
  from .None import testing
label_desc: Use image node_id 6 for calling a global function with example usage: test_no_import_warning() without return types