code: def test_guess_scaling():
      start, model, _ = models.non_normal(n=5)
      a1 = scaling.guess_scaling(start, model=model)
      assert all((a1 > 0) & (a1 < 1e200))
  
imports: import warnings
  import numpy
  from pymc.tuning import scaling
  from tests import models
label_desc: Use image node_id 2 for calling a global function with example usage: test_guess_scaling() without return types