Update app.py

app.py

@@ -118,7 +118,8 @@ def csv_prompter(question,csv_name):
 with gr.Blocks() as demo:
     gr.Markdown("# Autonomous ChatDoctor (openai version), based on disease database knowledge")
     gr.Markdown("## Example: If I have frontal headache, fever, and painful sinuses, what disease should I have, and what medical test should I take?")
-    
+    openai_api_key_textbox = gr.Textbox(placeholder="Paste your OpenAI API key (sk-...) and hit Enter",
+                                                show_label=False, lines=1, type='password')
     
     chatbot = gr.Chatbot()
     msg = gr.Textbox()