python 清空文件夹

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import os

def del_file(path):
for i in os.listdir(path):
path_file = os.path.join(path,i)
if os.path.isfile(path_file):
os.remove(path_file)
else:
del_file(path_file)

dir_name = "d:\LR\WxServer\friendfile\resize\"
del_file(dir_name)