fix

app.py

@@ -20,12 +20,12 @@ def postag(tk):
 def genFlatDepthTree(expr):
     doc = nlp(expr)
     root = next(doc.sents).root
-    node = Node(root.text+": 0 (Root)"+postag(root), parent=None)
+    node = Node(root.text+"\t (Root)"+postag(root)+" - [0]", parent=None)
 
     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)+postag(ch), parent=last_node), depth+1)
+                tree(ch, Node(ch.text+"\t"+postag(ch)++" - ["str(depth+1)+"]", parent=last_node), depth+1)
     
     tree(root, node, 0)
     flat_tree = ""