Update app.py

app.py

@@ -24,7 +24,7 @@ def genFlatDepthTree(expr):
     def tree(tk, last_node, depth):
         if tk.n_lefts + tk.n_rights > 0:
             for ch in tk.children:
-                tree(ch, Node(ch.text+" :"+str(depth+1)+markTk(ch)+postag(ch), parent=last_node), depth+1)
+                tree(ch, Node(ch.text+" :"+str(depth+1)+postag(ch), parent=last_node), depth+1)
     
     tree(root, node, 0)
     flat_tree = ""