Update app.py

app.py

@@ -16,10 +16,13 @@ os.environ["TOKENIZERS_PARALLELISM"] = "false"
 #OPENAI_API_KEY = ""
 OPENAI_API_KEY = os.environ.get("OPENAI_API_KEY", "")
 OPENAI_TEMP  = 0
+
 PINECONE_KEY = os.environ["PINECONE_KEY"]
 PINECONE_ENV = "asia-northeast1-gcp"
 PINECONE_INDEX = "3gpp"
 
+EMBEDDING_MODEL = "sentence-transformers/all-mpnet-base-v2"
+
 # return top-k text chunk from vector store
 VECTOR_SEARCH_TOP_K = 10
 
@@ -57,7 +60,7 @@ def init_model(api_key):
     try:
         if api_key and api_key.startswith("sk-") and len(api_key) > 50:
             
-            embeddings = HuggingFaceEmbeddings(model_name="sentence-transformers/all-mpnet-base-v2")
+            embeddings = HuggingFaceEmbeddings(model_name=EMBEDDING_MODEL)
 
             pinecone.init(api_key     = PINECONE_KEY,
                           environment = PINECONE_ENV)