问Python基于浏览模式生成树

EN

class Node(object):

    def __init__(self, name):
        self.name = name
        self.children = {}

    def insert(self, paths):
        child_name = paths.pop(0)
        if not child_name in self.children:
            self.children[child_name] = Node(child_name)
        if paths:
            self.children[child_name].insert(paths)

with open('urls.txt') as urls:
    root = Node('')
    for url in urls:
        root.insert(url.split('/'))