code: def array(shape, dtype):
      return numpy.random.uniform(-1, 1, shape).astype(dtype)
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  import chainer.functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import backend
  from chainer.testing import condition
label_desc: Use image node_id 3 for calling a global function with example usage: array(shape, dtype) and returns: numpy