code: def _random_matrix(self, dtype, shape):
      np.random.seed(1)
  
      def rng():
          return (
              np.random.uniform(low=-1.0, high=1.0, size=np.prod(shape))
              .reshape(shape)
              .astype(dtype)
          )
  
      x_np = rng()
      if np.issubdtype(dtype, np.complexfloating):
          x_np += rng() * dtype(1j)
      return x_np
  
imports: import itertools
  import unittest
  from absl.testing import parameterized
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import linalg_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the QrOpTest obj's underlying member method code with example usage: obj._random_matrix(dtype, shape) and returns: x_np, np