title: Tensorflow 2.x - tf.contrib.layers.variance_scaling_initializer()
body: <p>I've problem with this line and using Tensorflow 2.3.1</p>
  <pre><code>if w_init is None:
          w_init = tf.contrib.layers.variance_scaling_initializer()
  </code></pre>
  <p>AttributeError: module 'tensorflow' has no attribute 'contrib'</p>