code: def one_of(*args):
      ii = scope.randint(len(args))
      return scope.switch(ii, *args)
  
imports: from __future__ import print_function
  from __future__ import division
  from builtins import range
  from past.utils import old_div
  import sys
  import numpy
  from .base import scope, as_apply, dfs, rec_eval, clone
label_desc: Use image node_id 15 for calling a global function with example usage: one_of() and returns: scope