code: def rand(individual):
      r"""Random test objective function.
  
      .. list-table::
         :widths: 10 50
         :stub-columns: 1
  
         * - Type
           - minimization or maximization
         * - Range
           - none
         * - Global optima
           - none
         * - Function
           - :math:`f(\mathbf{x}) = \text{\texttt{random}}(0,1)`
      """
      return (random.random(),)
  
imports: import random
  from math import sin, cos, pi, exp, e, sqrt
  from operator import mul
  from functools import reduce
label_desc: Use image node_id 1 for calling a global function with example usage: rand(individual) and returns: random