code: def test_span():
      array = np.array([[0.5, 0.75, 0.5, 0.9]])
  
      lb = [0]
  
      ub = [10]
  
      span_array = hyper.span(array, lb, ub)
  
      assert span_array > 0
  
imports: import numpy
  from opytimizer.math import hyper
label_desc: Use image node_id 2 for calling a global function with example usage: test_span() without return types