Update app.py

app.py

@@ -95,6 +95,8 @@ def create_binary_tree_edges(root):
             new_prev += [child for child in node.children if (len(child.children) > 0)]
         prev = new_prev
 
+    edges
+
 def plot_tree_using_igraph():
     # Define the edges in a tree structure
     # edges = [(0, 1), (0, 2), (1, 3), (1, 4), (2, 5), (2, 6)]