Update app.py

app.py

@@ -59,12 +59,12 @@ def main():
         docsearch = FAISS.from_documents(text_chunks, embeddings)
         docsearch.save_local(DB_FAISS_PATH)
 
-        #llm = CTransformers(model="meta-llama/Llama-2-7b-chat-hf",
-        #                    model_type="llama",
-        #                    max_new_tokens=512,
-        #                    temperature=0.1)
+        llm = CTransformers(model="meta-llama/Llama-2-7b-chat-hf",
+                            model_type="llama",
+                            max_new_tokens=512,
+                            temperature=0.1)
 
-        llm = CTransformers(model="NexaAIDev/Octopus-v2")
+        #llm = CTransformers(model="NexaAIDev/Octopus-v2")
 
         qa = ConversationalRetrievalChain.from_llm(llm, retriever=docsearch.as_retriever())