Update app.py

app.py

@@ -17,6 +17,7 @@ START = tf.argmax(tf.constant(reserved_tokens) == "[START]")
 END = tf.argmax(tf.constant(reserved_tokens) == "[END]")
 PAD = tf.argmax(tf.constant(reserved_tokens) == "[PAD]")        
 VOCAB_SIZE = len(vocab)
+print(VOCAB_SIZE)
 D_MODEL = 256
 NB_LAYERS = 6
 FFN_UNITS = 2048