Update app.py

app.py

@@ -566,7 +566,7 @@ def _summarize(text, max_words=20):
     gen = model.generate(
         toks,
         length_penalty=2.0,
-        num_beams=max( get_tensor_length(toks) // 4 , 4 ),
+        num_beams=4,
         early_stopping=True,
         max_length=max_words
     )