Update app.py

app.py

@@ -481,21 +481,22 @@ def process_answer(question, full_text):
     import tempfile
     import os
     import shutil
+    from langchain_community.vectorstores import Chroma
     
-    # Use a safe, writable temp directory
+    # Writable temp directory for Hugging Face Spaces or similar
     chroma_dir = os.path.join(tempfile.gettempdir(), "chroma_db")
     
-    # Clean up old data and recreate
+    # Clean up old vectorstore
     if os.path.exists(chroma_dir):
         shutil.rmtree(chroma_dir)
     os.makedirs(chroma_dir, exist_ok=True)
     
-    # Create vectorstore and retriever
+    # Create Chroma vector store
     db = Chroma.from_documents(splits, embeddings, persist_directory=chroma_dir)
-    db.persist()  # Optional: Saves data to disk for reuse within the same session
     retriever = db.as_retriever()
 
 
+
     # Set up the model
     llm = load_model()