text: #!/usr/bin/env python
  
  import tensorflow as tf
  import numpy as np
  
  x = [[1.0,2.0], [3.0,4.0]]
  y = np.array(x)
  z = tf.constant(y)
  print(type(x), type(y), type(z))
  print(x, y, z)
  print()
  
  sess = tf.Session()
  y_ = sess.run(z)
  x_ = y_.tolist()
  
  print(type(x_), type(y_), type(z))
  print(x_, y_, z)
  