Update app.py

app.py

@@ -1,9 +1,11 @@
 import gradio as gr
 from huggingface_hub import InferenceClient
+import torch
+from sentance-transformers import SentanceTransformer
 
 client = InferenceClient("microsoft/phi-4")
 
-# Topics
+# Topic list
 BIO_TOPICS = [
     "Cell Biology",
     "Organisation",
@@ -21,14 +23,14 @@ def set_topic(topic):
     chosen_topic = topic
     return f"✅ Great! You've chosen **{topic}**. Let's start your study session."
 
+    
+
 def respond(message, history):
     global chosen_topic
-    if not chosen_topic:
-        return "⚠️ Please choose a topic before starting."
 
     messages = [{
         "role": "system",
-        "content": f"You are a friendly GCSE Biology tutor focusing on **{chosen_topic}**."
+        "content": f"You are a friendly GCSE Biology tutor focusing on **{chosen_topic}**." # Add full on prompt
     }]
 
     if history:
@@ -42,6 +44,8 @@ def respond(message, history):
     )
     return response['choices'][0]['message']['content'].strip()
 
+    
+
 # Create the Gradio interface
 with gr.Blocks() as demo:
     gr.Markdown("# ACE it! 📚 — GCSE Biology Tutor")
@@ -56,5 +60,7 @@ with gr.Blocks() as demo:
 
     topic_button.click(set_topic, inputs=topic_dropdown, outputs=topic_output)
 
+    
+
 demo.launch()