Update app.py

app.py

@@ -49,13 +49,23 @@ def create_plotly_tree():
 
 def print_on_click(trace, points, selector):
     print('Clicked')
+
+def update_point(trace, points, selector):
+    c = list(scatter.marker.color)
+    s = list(scatter.marker.size)
+    for i in points.point_inds:
+        c[i] = '#bae2be'
+        s[i] = 20
+        with f.batch_update():
+            scatter.marker.color = c
+            scatter.marker.size = s
     
 
 PLOTLY_TREE = create_plotly_tree()
 node_trace = PLOTLY_TREE.data[1]
 print('node_trace', node_trace)
 print(node_trace.on_click)
-node_trace.on_click(print_on_click)
+node_trace.on_click(update_point)
 
 print('PLOTLY_TREE', PLOTLY_TREE)