Update app.py

app.py

@@ -1,6 +1,10 @@
+import os
 import gradio as gr
 from gradio_client import Client
 
+# Setting up environment variable to access private spaces via Gradio clients
+HF_TOKEN = os.environ.get("HF_TOKEN", None)
+
 # Initializing Gradio Python Clients for the two Llama chatbots
 client_llama3_1 = Client("ysharma/Chat_with_Meta_llama3_1_8b_dupe", hf_token=HF_TOKEN)
 client_llama3 = Client("ysharma/Chat_with_Meta_llama3_8b_dupe", hf_token=HF_TOKEN)
@@ -57,8 +61,8 @@ def chat_llama3_1(history_llama3_1, temp, max_tokens):
 
 
 # Gradio block
-chatbot_llama3 = gr.Chatbot(height=450,  label='Llama3 8b Chat',) #placeholder=PLACEHOLDER,
-chatbot_llama3_1 = gr.Chatbot(height=450,  label='Llama3.1 8b Chat',) #placeholder=PLACEHOLDER,
+chatbot_llama3 = gr.Chatbot(height=450,  label='Llama3 8b Chat', placeholder=PLACEHOLDER_LLAMA3,)
+chatbot_llama3_1 = gr.Chatbot(height=450,  label='Llama3.1 8b Chat', placeholder=PLACEHOLDER_LLAMA3_1,)
 textbox = gr.Textbox(placeholder="Type your text and press Enter", scale=7, label="User Mesaages")
 additional_inputs_accordion = gr.Accordion(label="⚙️ Parameters", open=False, render=False)
 temperature = gr.Slider(minimum=0,