# this is a code snippet
print("hello world")

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# this is a code block with line numbers
for i in range(5):
  print('%d%s' %(i, ", "))

    0, 
    1, 
    2, 
    3, 
    4, 

# this is a code block that overflow scrolls
    Epoch 1/10
    118/118 [==============================] - 390s 3s/step - loss: 0.0614 - acc: 0.8150 - val_loss: 0.0202 - val_acc: 0.9415