Tree lookup

Lookup will follow a path and return whatever node it is pointing to.

libsaria/trees.py

@@ -47,6 +47,13 @@ class Tree(dict):
 		if len(path) > 1:
 			child.insert(path[1:])
 
+	def lookup(self, path):
+		print self.keys(), path
+		child = self[path[0]]
+		if len(path) > 1:
+			return child.lookup(path[1:])
+		return child
+
 
 class DLTree(Tree):
 	def __init__(self):