code: def test_has_verbosity():
      param = HasVerbosity()
      assert param.get_verbosity() == 0
      verbosity = 2
      param.set_verbosity(verbosity)
      assert param.get_verbosity() == verbosity
  
file_path: elephas/tests/ml/test_params.py
imports: from elephas.ml.params import *
label_desc: Use image node_id 9 for calling a global function with example usage: test_has_verbosity() without return types