python 删除文件

@retry 删除文件会报异常，但不是代码问题，可以重试到运行成功

import os
from retrying import retry
import  shutil

del_dir = r"C:\Users\Administrator\Desktop\school\{}\special"

@retry
def delete_dir(del_dir):
    if(os.path.exists(del_dir)):
        shutil.rmtree(del_dir)
        print("移除文件：%s" % del_dir)
    else :
        print("文件不存在")

if __name__ == '__main__':

    for i in range(1,3450):
        try:
            delete_dir(del_dir.format(i))
        except:
            delete_dir(del_dir.format(i))