Refactored example update function

app.py

@@ -938,7 +938,7 @@ chat_interface = gr.ChatInterface(
     ],
     stop_btn=True,
     examples=[
-        [f"In bullet-points, give me the classes from that Turtle ontology :"]
+        ["In bullet-points, give me the classes from that Turtle ontology :"]
     ],
     cache_examples=False,
     type="messages",
@@ -947,9 +947,17 @@ chat_interface = gr.ChatInterface(
 )
 
 with gr.Blocks() as demo:
-    def set_example(file):
-        gr_file = gr.File(value=file, visible=True)
-        chat_interface.examples.__setitem__(slice(None), [[gr_file]])
+    def update_examples(file_path):
+        if file_path is None:
+            return None
+        gr_file = gr.File(value=file_path, visible=True)    
+        new_examples = [[f"Analyze the following document: {file_path}"]]
+        
+        chat_interface.examples = new_examples
+        chat_interface.examples_messages = chat_interface._setup_example_messages(examples=new_examples,
+                                                                                    example_icons=None,
+                                                                                    example_labels=None)
+        
         return gr_file
     
     with gr.Row():
@@ -962,7 +970,7 @@ with gr.Blocks() as demo:
         )
         # use the file content as an example for the chat interface
         txt_file.change(
-            fn=set_example,
+            fn=update_examples,
             inputs=txt_file,
             outputs=gr.File(visible=False)
         )