code: def obj_fun(x, noise_level=noise_level):
      return (
          np.sin(5 * x[0]) * (1 - np.tanh(x[0] ** 2))
          + np.random.randn() * noise_level
      )
  
imports: import numpy
  import os
  import sys
  from skopt import gp_minimize
  from skopt import dump, load
  from os.path import getsize
label_desc: Use image node_id 1 for calling a global function with example usage: obj_fun(x, noise_level) and returns: unknown