code: def test_hyperballs() -> None:
      tools.quasi_randomize(np.random.randn(8, 10, 10, 2))
  
file_path: nevergrad/nevergrad/common/test_tools.py
imports: import os
  import typing
  import numpy
  from .None import tools
  from .None import testing
label_desc: Use image node_id 8 for calling a global function with example usage: test_hyperballs() without return types