Update app.py

app.py

@@ -253,4 +253,12 @@ if selected_app == "2) Merge CSVs":
                 st.rerun()
 
 if selected_app == "3) Upload Datasets":
-    st.markdown("Go to this [google colab link](https://colab.research.google.com/drive/1eCpk9HUoCKZb--tiNyQSHFW2ojoaA35m) to get started")
+    st.markdown("Go to this [google colab link](https://colab.research.google.com/drive/1eCpk9HUoCKZb--tiNyQSHFW2ojoaA35m) to get started")
+
+if selected_app == "4) Create Chatbot":
+    code = '''python
+    def hello_world():
+        print("Hello, world!")
+    '''
+    
+    st.code(code, language='python')