Update app.py

app.py

@@ -2,9 +2,10 @@ import streamlit as st
 from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
   
 model_name = "gpt2-large"
-tokenizer = AutoTokenizer.from_pretrained(model_name)
+
 @st.cache
 def load_pipeline(model_name):
+    tokenizer = AutoTokenizer.from_pretrained(model_name)
     model =  AutoModelForCausalLM.from_pretrained(model_name,pad_token_id=tokenizer.eos_token_id)
     return pipeline('text-generation', model=model, tokenizer=tokenizer)