Fix bug for environment variable username and password

README.md

@@ -51,7 +51,7 @@ To use AIRIS, follow these steps:
 
 4. Access the application via your web browser: `http://localhost:7860`
 
-5. Enter your username and password to log in. (Make sure you set APIKEY ChatGPT also username password from environment variables with syntax "AIRIS_DEMO_ACCOUNT_{YOUR_USERNAME}")
+5. Enter your username and password to log in. (Make sure you set APIKEY ChatGPT also username password from environment variables with syntax "AIRIS_DEMO_ACCOUNT_<YOUR_USERNAME>")
 
 6. Start the interview or survey by following the prompts provided by the application.
 

app.py

@@ -20,9 +20,10 @@ def start_chatbot(input_username, input_password, input_questions, id_interview)
             + (gr.update(value="Invalid questions. Please try again."),)
             + (gr.update(),) * 5
         )
+    print(os.environ)
     if (
-        "AIRIS_DEMO_ACCOUNT_{" + input_username + "}" not in os.environ
-        or os.environ["AIRIS_DEMO_ACCOUNT_{" + input_username + "}"] != input_password
+        f"AIRIS_DEMO_ACCOUNT_{input_username}" not in os.environ
+        or os.environ[f"AIRIS_DEMO_ACCOUNT_{input_username}"] != input_password
     ):
         return (
             (gr.update(),) * 2