use gr.Code block

app.py

@@ -97,7 +97,7 @@ with demo:
         _, colum_2, _ = gr.Column(scale=1), gr.Column(scale=6), gr.Column(scale=1)
         with colum_2:
             gr.Markdown(value=description)
-            code = gr.Textbox(lines=5, label="Input code", value="def all_odd_elements(sequence):\n    \"\"\"Returns every odd element of the sequence.\"\"\"")
+            code = gr.Code(lines=5, language="python", label="Input code", value="def all_odd_elements(sequence):\n    \"\"\"Returns every odd element of the sequence.\"\"\"")
             
             with gr.Accordion("Advanced settings", open=False):
                 max_new_tokens= gr.Slider(