code: def gen_unique_vector(size, dtype):
      # generate a randomized vector with unique elements
      retval = np.arange(size) * 3.0 + np.random.uniform(-1.0, 1.0)
      return (retval[np.random.permutation(size)] - size * 1.5).astype(
          dtype
      )
  
imports: from __future__ import absolute_import, print_function, division
  from itertools import product, chain
  from functools import reduce
  import unittest
  from theano.tests import unittest_tools
  import numpy
  import theano
  from theano import tensor
  from theano.tensor.sort import sort, SortOp
  from theano.tensor.sort import argsort, ArgSortOp
  from theano.tensor.sort import topk, argtopk, topk_and_argtopk, TopKOp
label_desc: Use image node_id 1 for calling a global function with example usage: gen_unique_vector(size, dtype) and returns: unknown