Update app2.py

app2.py

@@ -29,22 +29,15 @@ button1 = pn.widgets.Button(icon='home', name="Home", icon_size='1.5em', button_
 button2 = pn.widgets.Button(icon='file-analytics', name='My papers', icon_size='1.5em', button_type='primary', button_style='outline', width=140)
 button3 = pn.widgets.Button(icon='settings', icon_size='1.5em', name='Settings', button_type='primary', button_style='outline', width=140)
 
-# Custom RadioButtonGroup widget with additional value_change event
-class CustomRadioButtonGroup(param.Parameterized):
-    value = param.String(default="⭐", doc="The selected value")
-
-    @param.depends('value', watch=True)
-    def _trigger_value_change(self):
-        self.param.trigger('value_change')
-
-select = CustomRadioButtonGroup()
+# Custom RadioButtonGroup widget
+select = pn.widgets.RadioButtonGroup(value="⭐", options=["⭐", "🐘"], name='String', align='center')
 
 # Function to display the selected value
 def display_selected_value(event):
     print(f"Selected value: {select.value}")
 
-# Attach the function to the CustomRadioButtonGroup's value_change event
-select.param.watch(display_selected_value, 'value_change')
+# Attach the function to the RadioButtonGroup's on_click event
+select.on_click(display_selected_value)
 
 # Create a column layout for the buttons inside the toggleable sidebar
 buttons = pn.Column(
@@ -53,13 +46,6 @@ buttons = pn.Column(
     css_classes=['hidden']
 )
 
-# Function to display the selected value
-def display_selected_value(event):
-    print(f"Selected value: {select.value}")
-
-# Attach the function to the CustomRadioButtonGroup's value_change event
-select.param.watch(display_selected_value, 'value_change')
-
 # List to store the entered options
 loaded_list = TLDR.load_categories()