Update app.py

app.py

@@ -52,72 +52,4 @@ def check_answer(topic, user_code):
         feedback = response.choices[0].message['content'].strip()
         return feedback
     except Exception as e:
-        return f"Error: {str(e)}"
-
-def respond(message, chat_history):
-    if chat_history is None:
-        chat_history = []
-    
-    # Check if this is the first message to set the topic
-    if len(chat_history) == 0:
-        topic = message
-        question = generate_exercise_question(topic)
-        chat_history.append((message, question))
-        return "", chat_history, chat_history, "", None
-    else:
-        chat_history.append((message, "Please answer the question or type 'next' for another question on the same topic."))
-        return "", chat_history, chat_history, "", None
-
-def submit_code(topic, user_code, chat_history):
-    feedback = check_answer(topic, user_code)
-    chat_history.append((user_code, feedback))
-    return "", chat_history, chat_history, "", None
-
-def undo(chat_history):
-    if chat_history:
-        chat_history.pop()
-    return chat_history
-
-def clear():
-    return [], []
-
-# Create the Gradio interface
-with gr.Blocks() as demo:
-    gr.Markdown("# Python Tutor")
-    gr.Markdown("Helps you learn Python using the latest documentation.")
-
-    chatbot = gr.Chatbot(label="Python Tutor")
-    state = gr.State([])
-    topic_state = gr.State("")
-
-    with gr.Row():
-        with gr.Column():
-            user_input = gr.Textbox(
-                show_label=False,
-                placeholder="Type the Python topic you want to learn about...",
-                lines=1
-            )
-            submit_button = gr.Button("Submit")
-            code_input = gr.Code(language="python", lines=10, placeholder="Write your code here...")
-            code_submit_button = gr.Button("Submit Code")
-            undo_button = gr.Button("Undo")
-            clear_button = gr.Button("Clear")
-
-        submit_button.click(respond, [user_input, state], [user_input, state, chatbot, topic_state])
-        code_submit_button.click(submit_code, [topic_state, code_input, state], [code_input, state, chatbot, topic_state])
-        undo_button.click(undo, state, chatbot)
-        clear_button.click(clear, None, [chatbot, state, topic_state])
-
-    examples = [
-        ["lists"],
-        ["decorators"],
-        ["dictionaries"],
-        ["file handling"],
-        ["classes and objects"]
-    ]
-
-    # Add examples
-    gr.Examples(examples=examples, inputs=[user_input])
-
-# Launch the app
-demo.launch()
+        return f"Error: {s