Update app.py

app.py

@@ -72,7 +72,6 @@ def generate(prompt, history,max_new_tokens,temperature=temperature,top_p=top_p,
     for response in stream:
         output += response.token.text
         if history:
-            print (history)
             yield "",[(prompt,output)]
         else:
             yield "",[(prompt,output)]
@@ -92,7 +91,8 @@ def generate(prompt, history,max_new_tokens,temperature=temperature,top_p=top_p,
             print(line)            
     
     if history:
-        return "",history.append([(prompt,output)])
+        history.append((prompt,output))
+        return "",history
     else:
         return "",[(prompt,output)]