Update app.py

app.py

@@ -58,7 +58,7 @@ metadata_path = os.path.join(VECTOR_DB_PATH, "metadata.pkl")
 def init_openai_api():
     """Initialize OpenAI API with API key from Colab secrets."""
     try:
-        openai_api_key = userdata.get('OPENAI_API_KEY')  
+        openai_api_key = os.environ.get('OPENAI_API_KEY')  
         if not openai_api_key:
             print("OPENAI_API_KEY not found in Colab secrets.")
             return False
@@ -73,7 +73,7 @@ def init_openai_api():
 def init_mistral_api():
     """Initialize Mistral API with API key from Colab secrets."""
     try:
-        mistral_api_key = userdata.get('MISTRAL_API_KEY')  
+        mistral_api_key = os.environ.get('MISTRAL_API_KEY')  
         if not mistral_api_key:
             print("MISTRAL_API_KEY not found in Colab secrets.")
             return False