Update app.py

app.py

@@ -53,6 +53,8 @@ def ask(question, openai_api_key, gemini_api_key, anthropic_api_key, file_name =
         file_name = f"files/{file_name}"
     
     try:
+        # API keys are provided thanks to sponsor credit.
+        
         openai_key = openai_api_key if openai_api_key and openai_api_key != "*" else os.environ.get("OPENAI_API_KEY")
         gemini_key = gemini_api_key if gemini_api_key and gemini_api_key != "*" else os.environ.get("GEMINI_API_KEY")
         anthropic_key = anthropic_api_key if anthropic_api_key and anthropic_api_key != "*" else os.environ.get("ANTHROPIC_API_KEY")
@@ -65,9 +67,6 @@ def ask(question, openai_api_key, gemini_api_key, anthropic_api_key, file_name =
     except Exception as e:
         gr.Warning(str(e))
         return ""
-    #finally:
-    #    for key in ["OPENAI_API_KEY", "GEMINI_API_KEY", "MODEL_API_KEY"]:
-    #        os.environ.pop(key, None)
 
 # Helper functions