Add missing imports in the multi_gpu_model() example. (keras-team#8180)

bzamecnik · fchollet · commit 1b5d54839daa · 2017-10-18T13:18:37.000-07:00
diff --git a/keras/utils/training_utils.py b/keras/utils/training_utils.py
@@ -47,6 +47,8 @@ def multi_gpu_model(model, gpus):
     ```python
         import tensorflow as tf
         from keras.applications import Xception
+        from keras.utils import multi_gpu_model
+        import numpy as np
 
         num_samples = 1000
         height = 224
