title: Issue with add method in tensorflow : AttributeError: module 'tensorflow.python.framework.ops' has no attribute '_TensorLike'
body: <pre><code>import keras as K
  from keras.models import Sequential
  from keras.layers import Dense
  from tensorflow import set_random_seed
  
  for hidden_neuron in hidden_neurons:
    model = Sequential()
  </code></pre>
  
  <p><code>model.add(Dense(hidden_neuron, input_dim=61, activation='relu'))</code></p>
  
  <p>-> i am getting error at this line. I am not really sure what am i missing here.</p>
  
  <p>Traceback (most recent call last):</p>
  
  <blockquote>
    <p>File "PycharmProjects/HW2/venv/bin/hw3q4.py", line 46, in 
        model.add(Dense(hidden_neuron, input_dim=61, activation='relu'))   File
    "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/keras/engine/sequential.py",
    line 165, in add
        layer(x)   File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/keras/engine/base_layer.py",
    line 414, in <strong>call</strong>
        self.assert_input_compatibility(inputs)   File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/keras/engine/base_layer.py",
    line 279, in assert_input_compatibility
        K.is_keras_tensor(x)   File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/keras/backend/tensorflow_backend.py",
    line 472, in is_keras_tensor
        if not is_tensor(x):   File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/keras/backend/tensorflow_backend.py",
    line 480, in is_tensor
        return isinstance(x, tf_ops._TensorLike) or tf_ops.is_dense_tensor_like(x)
    <strong>AttributeError: module 'tensorflow.python.framework.ops' has no attribute '_TensorLike'</strong></p>
  </blockquote>