title: [Python][Keras] softmax() got an unexpected keyword argument 'axis'
body: <p>I'm trying to run the following code in order to create a Convolutional Neural Network. The code is from a tutorial I found.</p>
  
  <pre><code>from keras.models import Sequential
  from keras.layers import Dense, Conv2D, Flatten
  model = Sequential()
  model.add(Conv2D(64, kernel_size=3, activation='relu', input_shape=(28,28,1)))
  model.add(Conv2D(32, kernel_size=3, activation='relu'))
  model.add(Flatten())
  model.add(Dense(10, activation='softmax'))
  </code></pre>
  
  <p>I've already searched for answers but nothing worked. Some people said to downgrade Keras, others to upgrade it with "pip install -U keras tensorflow", but I still get the same error message.</p>
  
  <p>Does anyone know how to fix this ?
  Thank you very much !</p>