Create app.py

app.py

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+import streamlit as st
+from huggingface_hub import InferenceClient
+
+# Initialize the InferenceClient
+client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
+
+def respond(
+    message,
+    history: list[tuple[str, str]],
+    system_message,
+    max_tokens,
+    temperature,
+    top_p,
+):
+    messages = [{"role": "system", "content": system_message}]
+
+    for val in history:
+        if val[0]:
+            messages.append({"role": "user", "content": val[0]})
+        if val[1]:
+            messages.append({"role": "assistant", "content": val[1]})
+
+    messages.append({"role": "user", "content": message})
+
+    response = ""
+    response_container = st.empty()  # Placeholder to update the response text
+
+    for message in client.chat_completion(
+        messages,
+        max_tokens=max_tokens,
+        stream=True,
+        temperature=temperature,
+        top_p=top_p,
+    ):
+        token = message.choices[0].delta.content
+
+        response += token
+        response_container.text(response)  # Dynamically update the response
+
+# Streamlit interface
+st.title("Chatbot Interface")
+
+# User inputs
+system_message = st.text_input("System message", value="You are a friendly Chatbot.")
+message = st.text_input("User message", key="user_message")
+max_tokens = st.slider("Max new tokens", 1, 2048, 512)
+temperature = st.slider("Temperature", 0.1, 4.0, 0.7)
+top_p = st.slider("Top-p (nucleus sampling)", 0.1, 1.0, 0.95)
+
+# A placeholder for chat history
+history = st.session_state.get('history', [])
+
+# Submit button
+if st.button("Send"):
+    if message:
+        # Append the new message to the history
+        history.append((message, ""))  # No assistant response yet
+        
+        # Call the respond function and update the history with the assistant's reply
+        for response in respond(message, history, system_message, max_tokens, temperature, top_p):
+            history[-1] = (message, response)
+        
+        # Save updated history in session state
+        st.session_state['history'] = history
+
+# Display the chat history
+for user_msg, bot_msg in history:
+    st.write(f"**User**: {user_msg}")
+    st.write(f"**Assistant**: {bot_msg}")